diff --git a/frontend/src/components/GraphPanel.vue b/frontend/src/components/GraphPanel.vue
index 314c966..db18829 100644
--- a/frontend/src/components/GraphPanel.vue
+++ b/frontend/src/components/GraphPanel.vue
@@ -1,14 +1,14 @@
 <template>
   <div class="graph-panel">
     <div class="panel-header">
-      <span class="panel-title">Graph Relationship Visualization</span>
+      <span class="panel-title">{{ $t('graph.panelTitle') }}</span>
       <!-- 顶部工具栏 (Internal Top Right) -->
       <div class="header-tools">
-        <button class="tool-btn" @click="$emit('refresh')" :disabled="loading" title="刷新图谱">
+        <button class="tool-btn" @click="$emit('refresh')" :disabled="loading" :title="$t('graph.refreshGraph')">
           <span class="icon-refresh" :class="{ 'spinning': loading }">↻</span>
           <span class="btn-text">Refresh</span>
         </button>
-        <button class="tool-btn" @click="$emit('toggle-maximize')" title="最大化/还原">
+        <button class="tool-btn" @click="$emit('toggle-maximize')" :title="$t('graph.toggleMaximize')">
           <span class="icon-maximize">⛶</span>
         </button>
       </div>
@@ -27,7 +27,7 @@
               <path d="M14.5 2A2.5 2.5 0 0 0 12 4.5v15a2.5 2.5 0 0 0 4.96.44 2.5 2.5 0 0 0 2.96-3.08 3 3 0 0 0 .34-5.58 2.5 2.5 0 0 0-1.32-4.24 2.5 2.5 0 0 0-4.44-4.04z" />
             </svg>
           </div>
-          {{ isSimulating ? 'GraphRAG长短期记忆实时更新中' : '实时更新中...' }}
+          {{ isSimulating ? $t('graph.graphMemoryRealtime') : $t('graph.realtimeUpdating') }}
         </div>
         
         <!-- 模拟结束后的提示 -->
@@ -39,8 +39,8 @@
               <line x1="12" y1="8" x2="12.01" y2="8"></line>
             </svg>
           </div>
-          <span class="hint-text">还有少量内容处理中，建议稍后手动刷新图谱</span>
-          <button class="hint-close-btn" @click="dismissFinishedHint" title="关闭提示">
+          <span class="hint-text">{{ $t('graph.pendingContentHint') }}</span>
+          <button class="hint-close-btn" @click="dismissFinishedHint" :title="$t('graph.closeHint')">
             <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
               <line x1="18" y1="6" x2="6" y2="18"></line>
               <line x1="6" y1="6" x2="18" y2="18"></line>
@@ -51,7 +51,7 @@
         <!-- 节点/边详情面板 -->
         <div v-if="selectedItem" class="detail-panel">
           <div class="detail-panel-header">
-            <span class="detail-title">{{ selectedItem.type === 'node' ? 'Node Details' : 'Relationship' }}</span>
+            <span class="detail-title">{{ selectedItem.type === 'node' ? $t('graph.nodeDetails') : $t('graph.relationship') }}</span>
             <span v-if="selectedItem.type === 'node'" class="detail-type-badge" :style="{ background: selectedItem.color, color: '#fff' }">
               {{ selectedItem.entityType }}
             </span>
@@ -203,13 +203,13 @@
       <!-- 加载状态 -->
       <div v-else-if="loading" class="graph-state">
         <div class="loading-spinner"></div>
-        <p>图谱数据加载中...</p>
+        <p>{{ $t('graph.graphDataLoading') }}</p>
       </div>
       
       <!-- 等待/空状态 -->
       <div v-else class="graph-state">
         <div class="empty-icon">❖</div>
-        <p class="empty-text">等待本体生成...</p>
+        <p class="empty-text">{{ $t('graph.waitingOntology') }}</p>
       </div>
     </div>
 
diff --git a/frontend/src/components/HistoryDatabase.vue b/frontend/src/components/HistoryDatabase.vue
index edc73f4..d6c6e9a 100644
--- a/frontend/src/components/HistoryDatabase.vue
+++ b/frontend/src/components/HistoryDatabase.vue
@@ -13,7 +13,7 @@
     <!-- 标题区域 -->
     <div class="section-header">
       <div class="section-line"></div>
-      <span class="section-title">推演记录</span>
+      <span class="section-title">{{ $t('history.title') }}</span>
       <div class="section-line"></div>
     </div>
 
@@ -36,16 +36,16 @@
             <span 
               class="status-icon" 
               :class="{ available: project.project_id, unavailable: !project.project_id }"
-              title="图谱构建"
+              :title="$t('history.graphBuild')"
             >◇</span>
             <span 
               class="status-icon available" 
-              title="环境搭建"
+              :title="$t('history.envSetup')"
             >◈</span>
             <span 
               class="status-icon" 
               :class="{ available: project.report_id, unavailable: !project.report_id }"
-              title="分析报告"
+              :title="$t('history.analysisReport')"
             >◆</span>
           </div>
         </div>
@@ -67,13 +67,13 @@
             </div>
             <!-- 如果有更多文件，显示提示 -->
             <div v-if="project.files.length > 3" class="files-more">
-              +{{ project.files.length - 3 }} 个文件
+              {{ $t('history.moreFiles', { count: project.files.length - 3 }) }}
             </div>
           </div>
           <!-- 无文件时的占位 -->
           <div class="files-empty" v-else>
             <span class="empty-file-icon">◇</span>
-            <span class="empty-file-text">暂无文件</span>
+            <span class="empty-file-text">{{ $t('history.noFiles') }}</span>
           </div>
         </div>
 
@@ -102,7 +102,7 @@
     <!-- 加载状态 -->
     <div v-if="loading" class="loading-state">
       <span class="loading-spinner"></span>
-      <span class="loading-text">加载中...</span>
+      <span class="loading-text">{{ $t('history.loadingText') }}</span>
     </div>
 
     <!-- 历史回放详情弹窗 -->
@@ -126,27 +126,27 @@
             <div class="modal-body">
               <!-- 模拟需求 -->
               <div class="modal-section">
-                <div class="modal-label">模拟需求</div>
-                <div class="modal-requirement">{{ selectedProject.simulation_requirement || '无' }}</div>
+                <div class="modal-label">{{ $t('history.simRequirement') }}</div>
+                <div class="modal-requirement">{{ selectedProject.simulation_requirement || $t('common.none') }}</div>
               </div>
 
               <!-- 文件列表 -->
               <div class="modal-section">
-                <div class="modal-label">关联文件</div>
+                <div class="modal-label">{{ $t('history.relatedFiles') }}</div>
                 <div class="modal-files" v-if="selectedProject.files && selectedProject.files.length > 0">
                   <div v-for="(file, index) in selectedProject.files" :key="index" class="modal-file-item">
                     <span class="file-tag" :class="getFileType(file.filename)">{{ getFileTypeLabel(file.filename) }}</span>
                     <span class="modal-file-name">{{ file.filename }}</span>
                   </div>
                 </div>
-                <div class="modal-empty" v-else>暂无关联文件</div>
+                <div class="modal-empty" v-else>{{ $t('history.noRelatedFiles') }}</div>
               </div>
             </div>
 
             <!-- 推演回放分割线 -->
             <div class="modal-divider">
               <span class="divider-line"></span>
-              <span class="divider-text">推演回放</span>
+              <span class="divider-text">{{ $t('history.replayTitle') }}</span>
               <span class="divider-line"></span>
             </div>
 
@@ -159,7 +159,7 @@
               >
                 <span class="btn-step">Step1</span>
                 <span class="btn-icon">◇</span>
-                <span class="btn-text">图谱构建</span>
+                <span class="btn-text">{{ $t('history.step1Button') }}</span>
               </button>
               <button 
                 class="modal-btn btn-simulation" 
@@ -167,7 +167,7 @@
               >
                 <span class="btn-step">Step2</span>
                 <span class="btn-icon">◈</span>
-                <span class="btn-text">环境搭建</span>
+                <span class="btn-text">{{ $t('history.step2Button') }}</span>
               </button>
               <button 
                 class="modal-btn btn-report" 
@@ -176,12 +176,12 @@
               >
                 <span class="btn-step">Step4</span>
                 <span class="btn-icon">◆</span>
-                <span class="btn-text">分析报告</span>
+                <span class="btn-text">{{ $t('history.step4Button') }}</span>
               </button>
             </div>
             <!-- 不可回放提示 -->
             <div class="modal-playback-hint">
-              <span class="hint-text">Step3「开始模拟」与 Step5「深度互动」需在运行中启动，不支持历史回放</span>
+              <span class="hint-text">{{ $t('history.replayHint') }}</span>
             </div>
           </div>
         </div>
@@ -193,10 +193,12 @@
 <script setup>
 import { ref, computed, onMounted, onUnmounted, onActivated, watch, nextTick } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
+import { useI18n } from 'vue-i18n'
 import { getSimulationHistory } from '../api/simulation'
 
 const router = useRouter()
 const route = useRoute()
+const { t } = useI18n()
 
 // 状态
 const projects = ref([])
@@ -337,7 +339,7 @@ const truncateText = (text, maxLength) => {
 
 // 从模拟需求生成标题（取前20字）
 const getSimulationTitle = (requirement) => {
-  if (!requirement) return '未命名模拟'
+  if (!requirement) return t('history.untitledSimulation')
   const title = requirement.slice(0, 20)
   return requirement.length > 20 ? title + '...' : title
 }
@@ -353,8 +355,8 @@ const formatSimulationId = (simulationId) => {
 const formatRounds = (simulation) => {
   const current = simulation.current_round || 0
   const total = simulation.total_rounds || 0
-  if (total === 0) return '未开始'
-  return `${current}/${total} 轮`
+  if (total === 0) return t('history.notStarted')
+  return t('history.roundsProgress', { current, total })
 }
 
 // 获取文件类型（用于样式）
@@ -382,7 +384,7 @@ const getFileTypeLabel = (filename) => {
 
 // 截断文件名（保留扩展名）
 const truncateFilename = (filename, maxLength) => {
-  if (!filename) return '未知文件'
+  if (!filename) return t('history.unknownFile')
   if (filename.length <= maxLength) return filename
   
   const ext = filename.includes('.') ? '.' + filename.split('.').pop() : ''
diff --git a/frontend/src/components/Step1GraphBuild.vue b/frontend/src/components/Step1GraphBuild.vue
index de33a3f..687d1c7 100644
--- a/frontend/src/components/Step1GraphBuild.vue
+++ b/frontend/src/components/Step1GraphBuild.vue
@@ -6,25 +6,25 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">01</span>
-            <span class="step-title">本体生成</span>
+            <span class="step-title">{{ $t('step1.ontologyGeneration') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="currentPhase > 0" class="badge success">已完成</span>
-            <span v-else-if="currentPhase === 0" class="badge processing">生成中</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-if="currentPhase > 0" class="badge success">{{ $t('step1.ontologyCompleted') }}</span>
+            <span v-else-if="currentPhase === 0" class="badge processing">{{ $t('step1.ontologyGenerating') }}</span>
+            <span v-else class="badge pending">{{ $t('step1.ontologyPending') }}</span>
           </div>
         </div>
         
         <div class="card-content">
           <p class="api-note">POST /api/graph/ontology/generate</p>
           <p class="description">
-            LLM分析文档内容与模拟需求，提取出现实种子，自动生成合适的本体结构
+            {{ $t('step1.ontologyDesc') }}
           </p>
 
           <!-- Loading / Progress -->
           <div v-if="currentPhase === 0 && ontologyProgress" class="progress-section">
             <div class="spinner-sm"></div>
-            <span>{{ ontologyProgress.message || '正在分析文档...' }}</span>
+            <span>{{ ontologyProgress.message || $t('step1.analyzingDocs') }}</span>
           </div>
 
           <!-- Detail Overlay -->
@@ -110,34 +110,34 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">02</span>
-            <span class="step-title">GraphRAG构建</span>
+            <span class="step-title">{{ $t('step1.graphRagBuild') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="currentPhase > 1" class="badge success">已完成</span>
+            <span v-if="currentPhase > 1" class="badge success">{{ $t('step1.ontologyCompleted') }}</span>
             <span v-else-if="currentPhase === 1" class="badge processing">{{ buildProgress?.progress || 0 }}%</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-else class="badge pending">{{ $t('step1.ontologyPending') }}</span>
           </div>
         </div>
 
         <div class="card-content">
           <p class="api-note">POST /api/graph/build</p>
           <p class="description">
-            基于生成的本体，将文档自动分块后调用 Zep 构建知识图谱，提取实体和关系，并形成时序记忆与社区摘要
+            {{ $t('step1.graphRagDesc') }}
           </p>
           
           <!-- Stats Cards -->
           <div class="stats-grid">
             <div class="stat-card">
               <span class="stat-value">{{ graphStats.nodes }}</span>
-              <span class="stat-label">实体节点</span>
+              <span class="stat-label">{{ $t('step1.entityNodes') }}</span>
             </div>
             <div class="stat-card">
               <span class="stat-value">{{ graphStats.edges }}</span>
-              <span class="stat-label">关系边</span>
+              <span class="stat-label">{{ $t('step1.relationEdges') }}</span>
             </div>
             <div class="stat-card">
               <span class="stat-value">{{ graphStats.types }}</span>
-              <span class="stat-label">SCHEMA类型</span>
+              <span class="stat-label">{{ $t('step1.schemaTypes') }}</span>
             </div>
           </div>
         </div>
@@ -148,23 +148,23 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">03</span>
-            <span class="step-title">构建完成</span>
+            <span class="step-title">{{ $t('step1.buildComplete') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="currentPhase >= 2" class="badge accent">进行中</span>
+            <span v-if="currentPhase >= 2" class="badge accent">{{ $t('step1.inProgress') }}</span>
           </div>
         </div>
         
         <div class="card-content">
           <p class="api-note">POST /api/simulation/create</p>
-          <p class="description">图谱构建已完成，请进入下一步进行模拟环境搭建</p>
+          <p class="description">{{ $t('step1.buildCompleteDesc') }}</p>
           <button 
             class="action-btn" 
             :disabled="currentPhase < 2 || creatingSimulation"
             @click="handleEnterEnvSetup"
           >
             <span v-if="creatingSimulation" class="spinner-sm"></span>
-            {{ creatingSimulation ? '创建中...' : '进入环境搭建 ➝' }}
+            {{ creatingSimulation ? $t('step1.creating') : $t('step1.enterEnvSetup') + ' ➝' }}
           </button>
         </div>
       </div>
@@ -189,9 +189,11 @@
 <script setup>
 import { computed, ref, watch, nextTick } from 'vue'
 import { useRouter } from 'vue-router'
+import { useI18n } from 'vue-i18n'
 import { createSimulation } from '../api/simulation'
 
 const router = useRouter()
+const { t } = useI18n()
 
 const props = defineProps({
   currentPhase: { type: Number, default: 0 },
@@ -233,11 +235,11 @@ const handleEnterEnvSetup = async () => {
       })
     } else {
       console.error('创建模拟失败:', res.error)
-      alert('创建模拟失败: ' + (res.error || '未知错误'))
+      alert(t('step1.createSimulationFailed', { error: res.error || t('common.unknownError') }))
     }
   } catch (err) {
     console.error('创建模拟异常:', err)
-    alert('创建模拟异常: ' + err.message)
+    alert(t('step1.createSimulationException', { error: err.message }))
   } finally {
     creatingSimulation.value = false
   }
diff --git a/frontend/src/components/Step2EnvSetup.vue b/frontend/src/components/Step2EnvSetup.vue
index eae776a..b10adb4 100644
--- a/frontend/src/components/Step2EnvSetup.vue
+++ b/frontend/src/components/Step2EnvSetup.vue
@@ -6,18 +6,18 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">01</span>
-            <span class="step-title">模拟实例初始化</span>
+            <span class="step-title">{{ $t('step2.simInstanceInit') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="phase > 0" class="badge success">已完成</span>
-            <span v-else class="badge processing">初始化</span>
+            <span v-if="phase > 0" class="badge success">{{ $t('common.completed') }}</span>
+            <span v-else class="badge processing">{{ $t('step2.initializing') }}</span>
           </div>
         </div>
         
         <div class="card-content">
           <p class="api-note">POST /api/simulation/create</p>
           <p class="description">
-            新建simulation实例，拉取模拟世界参数模版
+            {{ $t('step2.simInstanceDesc') }}
           </p>
 
           <div v-if="simulationId" class="info-card">
@@ -35,7 +35,7 @@
             </div>
             <div class="info-row">
               <span class="info-label">Task ID</span>
-              <span class="info-value mono">{{ taskId || '异步任务已完成' }}</span>
+              <span class="info-value mono">{{ taskId || $t('step2.asyncTaskDone') }}</span>
             </div>
           </div>
         </div>
@@ -46,41 +46,41 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">02</span>
-            <span class="step-title">生成 Agent 人设</span>
+            <span class="step-title">{{ $t('step2.generateAgentPersona') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="phase > 1" class="badge success">已完成</span>
+            <span v-if="phase > 1" class="badge success">{{ $t('common.completed') }}</span>
             <span v-else-if="phase === 1" class="badge processing">{{ prepareProgress }}%</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-else class="badge pending">{{ $t('common.pending') }}</span>
           </div>
         </div>
 
         <div class="card-content">
           <p class="api-note">POST /api/simulation/prepare</p>
           <p class="description">
-            结合上下文，自动调用工具从知识图谱梳理实体与关系，初始化模拟个体，并基于现实种子赋予他们独特的行为与记忆
+            {{ $t('step2.generateAgentPersonaDesc') }}
           </p>
 
           <!-- Profiles Stats -->
           <div v-if="profiles.length > 0" class="stats-grid">
             <div class="stat-card">
               <span class="stat-value">{{ profiles.length }}</span>
-              <span class="stat-label">当前Agent数</span>
+              <span class="stat-label">{{ $t('step2.currentAgentCount') }}</span>
             </div>
             <div class="stat-card">
               <span class="stat-value">{{ expectedTotal || '-' }}</span>
-              <span class="stat-label">预期Agent总数</span>
+              <span class="stat-label">{{ $t('step2.expectedAgentTotal') }}</span>
             </div>
             <div class="stat-card">
               <span class="stat-value">{{ totalTopicsCount }}</span>
-              <span class="stat-label">现实种子当前关联话题数</span>
+              <span class="stat-label">{{ $t('step2.relatedTopicsCount') }}</span>
             </div>
           </div>
 
           <!-- Profiles List Preview -->
           <div v-if="profiles.length > 0" class="profiles-preview">
             <div class="preview-header">
-              <span class="preview-title">已生成的 Agent 人设</span>
+              <span class="preview-title">{{ $t('step2.generatedAgentPersonas') }}</span>
             </div>
             <div class="profiles-list">
               <div 
@@ -94,9 +94,9 @@
                   <span class="profile-username">@{{ profile.name || `agent_${idx}` }}</span>
                 </div>
                 <div class="profile-meta">
-                  <span class="profile-profession">{{ profile.profession || '未知职业' }}</span>
+                  <span class="profile-profession">{{ profile.profession || $t('step2.unknownProfession') }}</span>
                 </div>
-                <p class="profile-bio">{{ profile.bio || '暂无简介' }}</p>
+                <p class="profile-bio">{{ profile.bio || $t('step2.noBio') }}</p>
                 <div v-if="profile.interested_topics?.length" class="profile-topics">
                   <span 
                     v-for="topic in profile.interested_topics.slice(0, 3)" 
@@ -118,19 +118,19 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">03</span>
-            <span class="step-title">生成双平台模拟配置</span>
+            <span class="step-title">{{ $t('step2.dualPlatformConfig') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="phase > 2" class="badge success">已完成</span>
-            <span v-else-if="phase === 2" class="badge processing">生成中</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-if="phase > 2" class="badge success">{{ $t('common.completed') }}</span>
+            <span v-else-if="phase === 2" class="badge processing">{{ $t('step2.generating') }}</span>
+            <span v-else class="badge pending">{{ $t('common.pending') }}</span>
           </div>
         </div>
 
         <div class="card-content">
           <p class="api-note">POST /api/simulation/prepare</p>
           <p class="description">
-            LLM 根据模拟需求与现实种子，智能设置世界时间流速、推荐算法、每个个体的活跃时间段、发言频率、事件触发等参数
+            {{ $t('step2.dualPlatformConfigDesc') }}
           </p>
           
           <!-- Config Preview -->
@@ -139,40 +139,40 @@
             <div class="config-block">
               <div class="config-grid">
                 <div class="config-item">
-                  <span class="config-item-label">模拟时长</span>
-                  <span class="config-item-value">{{ simulationConfig.time_config?.total_simulation_hours || '-' }} 小时</span>
+                  <span class="config-item-label">{{ $t('step2.simulationDuration') }}</span>
+                  <span class="config-item-value">{{ simulationConfig.time_config?.total_simulation_hours || '-' }} {{ $t('common.hours') }}</span>
                 </div>
                 <div class="config-item">
-                  <span class="config-item-label">每轮时长</span>
-                  <span class="config-item-value">{{ simulationConfig.time_config?.minutes_per_round || '-' }} 分钟</span>
+                  <span class="config-item-label">{{ $t('step2.roundDuration') }}</span>
+                  <span class="config-item-value">{{ simulationConfig.time_config?.minutes_per_round || '-' }} {{ $t('common.minutes') }}</span>
                 </div>
                 <div class="config-item">
-                  <span class="config-item-label">总轮次</span>
-                  <span class="config-item-value">{{ Math.floor((simulationConfig.time_config?.total_simulation_hours * 60 / simulationConfig.time_config?.minutes_per_round)) || '-' }} 轮</span>
+                  <span class="config-item-label">{{ $t('step2.totalRounds') }}</span>
+                  <span class="config-item-value">{{ Math.floor((simulationConfig.time_config?.total_simulation_hours * 60 / simulationConfig.time_config?.minutes_per_round)) || '-' }} {{ $t('common.rounds') }}</span>
                 </div>
                 <div class="config-item">
-                  <span class="config-item-label">每小时活跃</span>
+                  <span class="config-item-label">{{ $t('step2.activePerHour') }}</span>
                   <span class="config-item-value">{{ simulationConfig.time_config?.agents_per_hour_min }}-{{ simulationConfig.time_config?.agents_per_hour_max }}</span>
                 </div>
               </div>
               <div class="time-periods">
                 <div class="period-item">
-                  <span class="period-label">高峰时段</span>
+                  <span class="period-label">{{ $t('step2.peakHours') }}</span>
                   <span class="period-hours">{{ simulationConfig.time_config?.peak_hours?.join(':00, ') }}:00</span>
                   <span class="period-multiplier">×{{ simulationConfig.time_config?.peak_activity_multiplier }}</span>
                 </div>
                 <div class="period-item">
-                  <span class="period-label">工作时段</span>
+                  <span class="period-label">{{ $t('step2.workHours') }}</span>
                   <span class="period-hours">{{ simulationConfig.time_config?.work_hours?.[0] }}:00-{{ simulationConfig.time_config?.work_hours?.slice(-1)[0] }}:00</span>
                   <span class="period-multiplier">×{{ simulationConfig.time_config?.work_activity_multiplier }}</span>
                 </div>
                 <div class="period-item">
-                  <span class="period-label">早间时段</span>
+                  <span class="period-label">{{ $t('step2.morningHours') }}</span>
                   <span class="period-hours">{{ simulationConfig.time_config?.morning_hours?.[0] }}:00-{{ simulationConfig.time_config?.morning_hours?.slice(-1)[0] }}:00</span>
                   <span class="period-multiplier">×{{ simulationConfig.time_config?.morning_activity_multiplier }}</span>
                 </div>
                 <div class="period-item">
-                  <span class="period-label">低谷时段</span>
+                  <span class="period-label">{{ $t('step2.offPeakHours') }}</span>
                   <span class="period-hours">{{ simulationConfig.time_config?.off_peak_hours?.[0] }}:00-{{ simulationConfig.time_config?.off_peak_hours?.slice(-1)[0] }}:00</span>
                   <span class="period-multiplier">×{{ simulationConfig.time_config?.off_peak_activity_multiplier }}</span>
                 </div>
@@ -182,8 +182,8 @@
             <!-- Agent 配置 -->
             <div class="config-block">
               <div class="config-block-header">
-                <span class="config-block-title">Agent 配置</span>
-                <span class="config-block-badge">{{ simulationConfig.agent_configs?.length || 0 }} 个</span>
+                <span class="config-block-title">{{ $t('step2.agentConfig') }}</span>
+                <span class="config-block-badge">{{ simulationConfig.agent_configs?.length || 0 }} {{ $t('common.items') }}</span>
               </div>
               <div class="agents-cards">
                 <div 
@@ -205,7 +205,7 @@
                   
                   <!-- 活跃时间轴 -->
                   <div class="agent-timeline">
-                    <span class="timeline-label">活跃时段</span>
+                    <span class="timeline-label">{{ $t('step2.activeTimePeriod') }}</span>
                     <div class="mini-timeline">
                       <div 
                         v-for="hour in 24" 
@@ -228,34 +228,34 @@
                   <div class="agent-params">
                     <div class="param-group">
                       <div class="param-item">
-                        <span class="param-label">发帖/时</span>
+                        <span class="param-label">{{ $t('step2.postsPerHour') }}</span>
                         <span class="param-value">{{ agent.posts_per_hour }}</span>
                       </div>
                       <div class="param-item">
-                        <span class="param-label">评论/时</span>
+                        <span class="param-label">{{ $t('step2.commentsPerHour') }}</span>
                         <span class="param-value">{{ agent.comments_per_hour }}</span>
                       </div>
                       <div class="param-item">
-                        <span class="param-label">响应延迟</span>
+                        <span class="param-label">{{ $t('step2.responseDelay') }}</span>
                         <span class="param-value">{{ agent.response_delay_min }}-{{ agent.response_delay_max }}min</span>
                       </div>
                     </div>
                     <div class="param-group">
                       <div class="param-item">
-                        <span class="param-label">活跃度</span>
+                        <span class="param-label">{{ $t('step2.activityLevel') }}</span>
                         <span class="param-value with-bar">
                           <span class="mini-bar" :style="{ width: (agent.activity_level * 100) + '%' }"></span>
                           {{ (agent.activity_level * 100).toFixed(0) }}%
                         </span>
                       </div>
                       <div class="param-item">
-                        <span class="param-label">情感倾向</span>
+                        <span class="param-label">{{ $t('step2.sentimentBias') }}</span>
                         <span class="param-value" :class="agent.sentiment_bias > 0 ? 'positive' : agent.sentiment_bias < 0 ? 'negative' : 'neutral'">
                           {{ agent.sentiment_bias > 0 ? '+' : '' }}{{ agent.sentiment_bias?.toFixed(1) }}
                         </span>
                       </div>
                       <div class="param-item">
-                        <span class="param-label">影响力</span>
+                        <span class="param-label">{{ $t('step2.influenceWeight') }}</span>
                         <span class="param-value highlight">{{ agent.influence_weight?.toFixed(1) }}</span>
                       </div>
                     </div>
@@ -267,59 +267,59 @@
             <!-- 平台配置 -->
             <div class="config-block">
               <div class="config-block-header">
-                <span class="config-block-title">推荐算法配置</span>
+                <span class="config-block-title">{{ $t('step2.recommendAlgoConfig') }}</span>
               </div>
               <div class="platforms-grid">
                 <div v-if="simulationConfig.twitter_config" class="platform-card">
                   <div class="platform-card-header">
-                    <span class="platform-name">平台 1：广场 / 信息流</span>
+                    <span class="platform-name">{{ $t('step2.platform1Name') }}</span>
                   </div>
                   <div class="platform-params">
                     <div class="param-row">
-                      <span class="param-label">时效权重</span>
+                      <span class="param-label">{{ $t('step2.recencyWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.twitter_config.recency_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">热度权重</span>
+                      <span class="param-label">{{ $t('step2.popularityWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.twitter_config.popularity_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">相关性权重</span>
+                      <span class="param-label">{{ $t('step2.relevanceWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.twitter_config.relevance_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">病毒阈值</span>
+                      <span class="param-label">{{ $t('step2.viralThreshold') }}</span>
                       <span class="param-value">{{ simulationConfig.twitter_config.viral_threshold }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">回音室强度</span>
+                      <span class="param-label">{{ $t('step2.echoChamberStrength') }}</span>
                       <span class="param-value">{{ simulationConfig.twitter_config.echo_chamber_strength }}</span>
                     </div>
                   </div>
                 </div>
                 <div v-if="simulationConfig.reddit_config" class="platform-card">
                   <div class="platform-card-header">
-                    <span class="platform-name">平台 2：话题 / 社区</span>
+                    <span class="platform-name">{{ $t('step2.platform2Name') }}</span>
                   </div>
                   <div class="platform-params">
                     <div class="param-row">
-                      <span class="param-label">时效权重</span>
+                      <span class="param-label">{{ $t('step2.recencyWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.reddit_config.recency_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">热度权重</span>
+                      <span class="param-label">{{ $t('step2.popularityWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.reddit_config.popularity_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">相关性权重</span>
+                      <span class="param-label">{{ $t('step2.relevanceWeight') }}</span>
                       <span class="param-value">{{ simulationConfig.reddit_config.relevance_weight }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">病毒阈值</span>
+                      <span class="param-label">{{ $t('step2.viralThreshold') }}</span>
                       <span class="param-value">{{ simulationConfig.reddit_config.viral_threshold }}</span>
                     </div>
                     <div class="param-row">
-                      <span class="param-label">回音室强度</span>
+                      <span class="param-label">{{ $t('step2.echoChamberStrength') }}</span>
                       <span class="param-value">{{ simulationConfig.reddit_config.echo_chamber_strength }}</span>
                     </div>
                   </div>
@@ -330,7 +330,7 @@
             <!-- LLM 配置推理 -->
             <div v-if="simulationConfig.generation_reasoning" class="config-block">
               <div class="config-block-header">
-                <span class="config-block-title">LLM 配置推理</span>
+                <span class="config-block-title">{{ $t('step2.llmConfigReasoning') }}</span>
               </div>
               <div class="reasoning-content">
                 <div 
@@ -351,19 +351,19 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">04</span>
-            <span class="step-title">初始激活编排</span>
+            <span class="step-title">{{ $t('step2.initialActivation') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="phase > 3" class="badge success">已完成</span>
-            <span v-else-if="phase === 3" class="badge processing">编排中</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-if="phase > 3" class="badge success">{{ $t('common.completed') }}</span>
+            <span v-else-if="phase === 3" class="badge processing">{{ $t('step2.orchestrating') }}</span>
+            <span v-else class="badge pending">{{ $t('common.pending') }}</span>
           </div>
         </div>
 
         <div class="card-content">
           <p class="api-note">POST /api/simulation/prepare</p>
           <p class="description">
-            基于叙事方向，自动生成初始激活事件与热点话题，引导模拟世界的初始状态
+            {{ $t('step2.initialActivationDesc') }}
           </p>
 
           <div v-if="simulationConfig?.event_config" class="orchestration-content">
@@ -380,14 +380,14 @@
                     </linearGradient>
                   </defs>
                 </svg>
-                叙事引导方向
+                {{ $t('step2.narrativeDirection') }}
               </span>
               <p class="narrative-text">{{ simulationConfig.event_config.narrative_direction }}</p>
             </div>
 
             <!-- 热点话题 -->
             <div class="topics-section">
-              <span class="box-label">初始热点话题</span>
+              <span class="box-label">{{ $t('step2.initialHotTopics') }}</span>
               <div class="hot-topics-grid">
                 <span v-for="topic in simulationConfig.event_config.hot_topics" :key="topic" class="hot-topic-tag">
                   # {{ topic }}
@@ -397,7 +397,7 @@
 
             <!-- 初始帖子流 -->
             <div class="initial-posts-section">
-              <span class="box-label">初始激活序列 ({{ simulationConfig.event_config.initial_posts.length }})</span>
+              <span class="box-label">{{ $t('step2.initialActivationSeq', { count: simulationConfig.event_config.initial_posts.length }) }}</span>
               <div class="posts-timeline">
                 <div v-for="(post, idx) in simulationConfig.event_config.initial_posts" :key="idx" class="timeline-item">
                   <div class="timeline-marker"></div>
@@ -423,29 +423,29 @@
         <div class="card-header">
           <div class="step-info">
             <span class="step-num">05</span>
-            <span class="step-title">准备完成</span>
+            <span class="step-title">{{ $t('step2.setupComplete') }}</span>
           </div>
           <div class="step-status">
-            <span v-if="phase >= 4" class="badge processing">进行中</span>
-            <span v-else class="badge pending">等待</span>
+            <span v-if="phase >= 4" class="badge processing">{{ $t('step1.inProgress') }}</span>
+            <span v-else class="badge pending">{{ $t('common.pending') }}</span>
           </div>
         </div>
 
         <div class="card-content">
           <p class="api-note">POST /api/simulation/start</p>
-          <p class="description">模拟环境已准备完成，可以开始运行模拟</p>
+          <p class="description">{{ $t('step2.setupCompleteDesc') }}</p>
           
           <!-- 模拟轮数配置 - 只有在配置生成完成且轮数计算出来后才显示 -->
           <div v-if="simulationConfig && autoGeneratedRounds" class="rounds-config-section">
             <div class="rounds-header">
               <div class="header-left">
-                <span class="section-title">模拟轮数设定</span>
-                <span class="section-desc">MiroFish 自动规划推演现实 <span class="desc-highlight">{{ simulationConfig?.time_config?.total_simulation_hours || '-' }}</span> 小时，每轮代表现实 <span class="desc-highlight">{{ simulationConfig?.time_config?.minutes_per_round || '-' }}</span> 分钟时间流逝</span>
+                <span class="section-title">{{ $t('step2.roundsConfig') }}</span>
+                <span class="section-desc">{{ $t('step2.roundsConfigDesc', { hours: simulationConfig?.time_config?.total_simulation_hours || '-', minutesPerRound: simulationConfig?.time_config?.minutes_per_round || '-' }) }}</span>
               </div>
               <label class="switch-control">
                 <input type="checkbox" v-model="useCustomRounds">
                 <span class="switch-track"></span>
-                <span class="switch-label">自定义</span>
+                <span class="switch-label">{{ $t('step2.customToggle') }}</span>
               </label>
             </div>
             
@@ -454,10 +454,10 @@
                 <div class="slider-display">
                   <div class="slider-main-value">
                     <span class="val-num">{{ customMaxRounds }}</span>
-                    <span class="val-unit">轮</span>
+                    <span class="val-unit">{{ $t('step2.roundsUnit') }}</span>
                   </div>
                   <div class="slider-meta-info">
-                    <span>若Agent规模为100：预计耗时约 {{ Math.round(customMaxRounds * 0.6) }} 分钟</span>
+                    <span>{{ $t('step2.estimatedDuration', { minutes: Math.round(customMaxRounds * 0.6) }) }}</span>
                   </div>
                 </div>
 
@@ -478,7 +478,7 @@
                       :class="{ active: customMaxRounds === 40 }"
                       @click="customMaxRounds = 40"
                       :style="{ position: 'absolute', left: `calc(${(40 - 10) / (autoGeneratedRounds - 10) * 100}% - 30px)` }"
-                    >40 (推荐)</span>
+                    >{{ $t('step2.recommendedRounds', { rounds: 40 }) }}</span>
                     <span>{{ autoGeneratedRounds }}</span>
                   </div>
                 </div>
@@ -488,7 +488,7 @@
                 <div class="auto-info-card">
                   <div class="auto-value">
                     <span class="val-num">{{ autoGeneratedRounds }}</span>
-                    <span class="val-unit">轮</span>
+                    <span class="val-unit">{{ $t('step2.roundsUnit') }}</span>
                   </div>
                   <div class="auto-content">
                     <div class="auto-meta-row">
@@ -497,11 +497,11 @@
                           <circle cx="12" cy="12" r="10"></circle>
                           <polyline points="12 6 12 12 16 14"></polyline>
                         </svg>
-                        若Agent规模为100：预计耗时 {{ Math.round(autoGeneratedRounds * 0.6) }} 分钟
+                        {{ $t('step2.estimatedDurationFull', { minutes: Math.round(autoGeneratedRounds * 0.6) }) }}
                       </span>
                     </div>
                     <div class="auto-desc">
-                      <p class="highlight-tip" @click="useCustomRounds = true">若首次运行，强烈建议切换至‘自定义模式’减少模拟轮数，以便快速预览效果并降低报错风险 ➝</p>
+                      <p class="highlight-tip" @click="useCustomRounds = true">{{ $t(‘step2.customTip’) }} ➝</p>
                     </div>
                   </div>
                 </div>
@@ -514,14 +514,14 @@
               class="action-btn secondary"
               @click="$emit('go-back')"
             >
-              ← 返回图谱构建
+              ← {{ $t('step2.backToGraphBuild') }}
             </button>
             <button 
               class="action-btn primary"
               :disabled="phase < 4"
               @click="handleStartSimulation"
             >
-              开始双世界并行模拟 ➝
+              {{ $t('step2.startDualWorldSim') }} ➝
             </button>
           </div>
         </div>
@@ -547,32 +547,32 @@
           <!-- 基本信息 -->
           <div class="modal-info-grid">
             <div class="info-item">
-              <span class="info-label">事件外显年龄</span>
-              <span class="info-value">{{ selectedProfile.age || '-' }} 岁</span>
+              <span class="info-label">{{ $t('step2.profileModalAge') }}</span>
+              <span class="info-value">{{ selectedProfile.age || '-' }} {{ $t('step2.yearsOld') }}</span>
             </div>
             <div class="info-item">
-              <span class="info-label">事件外显性别</span>
-              <span class="info-value">{{ { male: '男', female: '女', other: '其他' }[selectedProfile.gender] || selectedProfile.gender }}</span>
+              <span class="info-label">{{ $t('step2.profileModalGender') }}</span>
+              <span class="info-value">{{ { male: $t('step2.genderMale'), female: $t('step2.genderFemale'), other: $t('step2.genderOther') }[selectedProfile.gender] || selectedProfile.gender }}</span>
             </div>
             <div class="info-item">
-              <span class="info-label">国家/地区</span>
+              <span class="info-label">{{ $t('step2.profileModalCountry') }}</span>
               <span class="info-value">{{ selectedProfile.country || '-' }}</span>
             </div>
             <div class="info-item">
-              <span class="info-label">事件外显MBTI</span>
+              <span class="info-label">{{ $t('step2.profileModalMbti') }}</span>
               <span class="info-value mbti">{{ selectedProfile.mbti || '-' }}</span>
             </div>
           </div>
 
           <!-- 简介 -->
           <div class="modal-section">
-            <span class="section-label">人设简介</span>
-            <p class="section-bio">{{ selectedProfile.bio || '暂无简介' }}</p>
+            <span class="section-label">{{ $t('step2.profileModalBio') }}</span>
+            <p class="section-bio">{{ selectedProfile.bio || $t('step2.noBio') }}</p>
           </div>
 
           <!-- 关注话题 -->
           <div class="modal-section" v-if="selectedProfile.interested_topics?.length">
-            <span class="section-label">现实种子关联话题</span>
+            <span class="section-label">{{ $t('step2.profileModalTopics') }}</span>
             <div class="topics-grid">
               <span 
                 v-for="topic in selectedProfile.interested_topics" 
@@ -584,25 +584,25 @@
 
           <!-- 详细人设 -->
           <div class="modal-section" v-if="selectedProfile.persona">
-            <span class="section-label">详细人设背景</span>
+            <span class="section-label">{{ $t('step2.profileModalPersona') }}</span>
             
             <!-- 人设维度概览 -->
             <div class="persona-dimensions">
               <div class="dimension-card">
-                <span class="dim-title">事件全景经历</span>
-                <span class="dim-desc">在此事件中的完整行为轨迹</span>
+                <span class="dim-title">{{ $t('step2.personaDimExperience') }}</span>
+                <span class="dim-desc">{{ $t('step2.personaDimExperienceDesc') }}</span>
               </div>
               <div class="dimension-card">
-                <span class="dim-title">行为模式侧写</span>
-                <span class="dim-desc">经验总结与行事风格偏好</span>
+                <span class="dim-title">{{ $t('step2.personaDimBehavior') }}</span>
+                <span class="dim-desc">{{ $t('step2.personaDimBehaviorDesc') }}</span>
               </div>
               <div class="dimension-card">
-                <span class="dim-title">独特记忆印记</span>
-                <span class="dim-desc">基于现实种子形成的记忆</span>
+                <span class="dim-title">{{ $t('step2.personaDimMemory') }}</span>
+                <span class="dim-desc">{{ $t('step2.personaDimMemoryDesc') }}</span>
               </div>
               <div class="dimension-card">
-                <span class="dim-title">社会关系网络</span>
-                <span class="dim-desc">个体链接与交互图谱</span>
+                <span class="dim-title">{{ $t('step2.personaDimSocial') }}</span>
+                <span class="dim-desc">{{ $t('step2.personaDimSocialDesc') }}</span>
               </div>
             </div>
 
@@ -633,14 +633,17 @@
 
 <script setup>
 import { ref, computed, watch, onMounted, onUnmounted, nextTick } from 'vue'
-import { 
-  prepareSimulation, 
-  getPrepareStatus, 
+import { useI18n } from 'vue-i18n'
+import {
+  prepareSimulation,
+  getPrepareStatus,
   getSimulationProfilesRealtime,
   getSimulationConfig,
-  getSimulationConfigRealtime 
+  getSimulationConfigRealtime
 } from '../api/simulation'
 
+const { t } = useI18n()
+
 const props = defineProps({
   simulationId: String,  // 从父组件传入
   projectData: Object,
diff --git a/frontend/src/components/Step3Simulation.vue b/frontend/src/components/Step3Simulation.vue
index 74d0e1e..32e136e 100644
--- a/frontend/src/components/Step3Simulation.vue
+++ b/frontend/src/components/Step3Simulation.vue
@@ -97,7 +97,7 @@
           @click="handleNextStep"
         >
           <span v-if="isGeneratingReport" class="loading-spinner-small"></span>
-          {{ isGeneratingReport ? '启动中...' : '开始生成结果报告' }} 
+          {{ isGeneratingReport ? $t('step3.generatingReportBtn') : $t('step3.startGenerateReportBtn') }}
           <span v-if="!isGeneratingReport" class="arrow-icon">→</span>
         </button>
       </div>
@@ -288,14 +288,17 @@
 <script setup>
 import { ref, computed, watch, onMounted, onUnmounted, nextTick } from 'vue'
 import { useRouter } from 'vue-router'
-import { 
-  startSimulation, 
+import { useI18n } from 'vue-i18n'
+import {
+  startSimulation,
   stopSimulation,
-  getRunStatus, 
+  getRunStatus,
   getRunStatusDetail
 } from '../api/simulation'
 import { generateReport } from '../api/report'
 
+const { t } = useI18n()
+
 const props = defineProps({
   simulationId: String,
   maxRounds: Number, // 从Step2传入的最大轮数
diff --git a/frontend/src/components/Step4Report.vue b/frontend/src/components/Step4Report.vue
index 22f2bdc..214fea6 100644
--- a/frontend/src/components/Step4Report.vue
+++ b/frontend/src/components/Step4Report.vue
@@ -58,7 +58,7 @@
                       <path d="M12 2a10 10 0 0 1 10 10" stroke-width="4" stroke="#4B5563" stroke-linecap="round"></path>
                     </svg>
                   </div>
-                  <span class="loading-text">正在生成{{ section.title }}...</span>
+                  <span class="loading-text">{{ $t('step4.generatingSection', { title: section.title }) }}</span>
                 </div>
               </div>
             </div>
@@ -129,7 +129,7 @@
 
           <!-- Next Step Button - 在完成后显示 -->
           <button v-if="isComplete" class="next-step-btn" @click="goToInteraction">
-            <span>进入深度互动</span>
+            <span>{{ $t('step4.goToInteraction') }}</span>
             <svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2">
               <line x1="5" y1="12" x2="19" y2="12"></line>
               <polyline points="12 5 19 12 12 19"></polyline>
diff --git a/frontend/src/components/Step5Interaction.vue b/frontend/src/components/Step5Interaction.vue
index 3d84c7c..cd721c6 100644
--- a/frontend/src/components/Step5Interaction.vue
+++ b/frontend/src/components/Step5Interaction.vue
@@ -58,7 +58,7 @@
                       <path d="M12 2a10 10 0 0 1 10 10" stroke-width="4" stroke="#4B5563" stroke-linecap="round"></path>
                     </svg>
                   </div>
-                  <span class="loading-text">正在生成{{ section.title }}...</span>
+                  <span class="loading-text">{{ $t('step4.generatingSection', { title: section.title }) }}</span>
                 </div>
               </div>
             </div>
@@ -85,8 +85,8 @@
             <path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"></path>
           </svg>
           <div class="action-bar-text">
-            <span class="action-bar-title">Interactive Tools</span>
-            <span class="action-bar-subtitle mono">{{ profiles.length }} agents available</span>
+            <span class="action-bar-title">{{ $t('step5.interactiveTools') }}</span>
+            <span class="action-bar-subtitle mono">{{ $t('step5.agentsAvailable', { count: profiles.length }) }}</span>
           </div>
         </div>
           <div class="action-bar-tabs">
@@ -98,7 +98,7 @@
               <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
                 <path d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"></path>
               </svg>
-              <span>与Report Agent对话</span>
+              <span>{{ $t('step5.chatWithReportAgent') }}</span>
             </button>
             <div class="agent-dropdown" v-if="profiles.length > 0">
               <button 
@@ -110,13 +110,13 @@
                   <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"></path>
                   <circle cx="12" cy="7" r="4"></circle>
                 </svg>
-                <span>{{ selectedAgent ? selectedAgent.username : '与世界中任意个体对话' }}</span>
+                <span>{{ selectedAgent ? selectedAgent.username : $t('step5.chatWithAgent') }}</span>
                 <svg class="dropdown-arrow" :class="{ open: showAgentDropdown }" viewBox="0 0 24 24" width="12" height="12" fill="none" stroke="currentColor" stroke-width="2">
                   <polyline points="6 9 12 15 18 9"></polyline>
                 </svg>
               </button>
               <div v-if="showAgentDropdown" class="dropdown-menu">
-                <div class="dropdown-header">选择对话对象</div>
+                <div class="dropdown-header">{{ $t('step5.selectChatTarget') }}</div>
                 <div 
                   v-for="(agent, idx) in profiles" 
                   :key="idx"
@@ -126,13 +126,13 @@
                   <div class="agent-avatar">{{ (agent.username || 'A')[0] }}</div>
                   <div class="agent-info">
                     <span class="agent-name">{{ agent.username }}</span>
-                    <span class="agent-role">{{ agent.profession || '未知职业' }}</span>
+                    <span class="agent-role">{{ agent.profession || $t('step2.unknownProfession') }}</span>
                   </div>
                 </div>
               </div>
             </div>
             <div class="tab-divider"></div>
-            <button 
+            <button
               class="tab-pill survey-pill"
               :class="{ active: activeTab === 'survey' }"
               @click="selectSurveyTab"
@@ -141,7 +141,7 @@
                 <path d="M9 11l3 3L22 4"></path>
                 <path d="M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11"></path>
               </svg>
-              <span>发送问卷调查到世界中</span>
+              <span>{{ $t('step5.sendSurvey') }}</span>
             </button>
           </div>
         </div>
@@ -154,8 +154,8 @@
             <div class="tools-card-header">
               <div class="tools-card-avatar">R</div>
               <div class="tools-card-info">
-                <div class="tools-card-name">Report Agent - Chat</div>
-                <div class="tools-card-subtitle">报告生成智能体的快速对话版本，可调用 4 种专业工具，拥有MiroFish的完整记忆</div>
+                <div class="tools-card-name">{{ $t('step5.reportAgentChat') }}</div>
+                <div class="tools-card-subtitle">{{ $t('step5.reportAgentDesc') }}</div>
               </div>
               <button class="tools-card-toggle" @click="showToolsDetail = !showToolsDetail">
                 <svg :class="{ 'is-expanded': showToolsDetail }" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2">
@@ -172,8 +172,8 @@
                     </svg>
                   </div>
                   <div class="tool-content">
-                    <div class="tool-name">InsightForge 深度归因</div>
-                    <div class="tool-desc">对齐现实世界种子数据与模拟环境状态，结合Global/Local Memory机制，提供跨时空的深度归因分析</div>
+                    <div class="tool-name">{{ $t('step5.toolInsightForge') }}</div>
+                    <div class="tool-desc">{{ $t('step5.toolInsightForgeDesc') }}</div>
                   </div>
                 </div>
                 <div class="tool-item tool-blue">
@@ -184,8 +184,8 @@
                     </svg>
                   </div>
                   <div class="tool-content">
-                    <div class="tool-name">PanoramaSearch 全景追踪</div>
-                    <div class="tool-desc">基于图结构的广度遍历算法，重构事件传播路径，捕获全量信息流动的拓扑结构</div>
+                    <div class="tool-name">{{ $t('step5.toolPanoramaSearch') }}</div>
+                    <div class="tool-desc">{{ $t('step5.toolPanoramaSearchDesc') }}</div>
                   </div>
                 </div>
                 <div class="tool-item tool-orange">
@@ -195,8 +195,8 @@
                     </svg>
                   </div>
                   <div class="tool-content">
-                    <div class="tool-name">QuickSearch 快速检索</div>
-                    <div class="tool-desc">基于 GraphRAG 的即时查询接口，优化索引效率，用于快速提取具体的节点属性与离散事实</div>
+                    <div class="tool-name">{{ $t('step5.toolQuickSearch') }}</div>
+                    <div class="tool-desc">{{ $t('step5.toolQuickSearchDesc') }}</div>
                   </div>
                 </div>
                 <div class="tool-item tool-green">
@@ -208,8 +208,8 @@
                     </svg>
                   </div>
                   <div class="tool-content">
-                    <div class="tool-name">InterviewSubAgent 虚拟访谈</div>
-                    <div class="tool-desc">自主式访谈，能够并行与模拟世界中个体进行多轮对话，采集非结构化的观点数据与心理状态</div>
+                    <div class="tool-name">{{ $t('step5.toolInterviewSubAgent') }}</div>
+                    <div class="tool-desc">{{ $t('step5.toolInterviewSubAgentDesc') }}</div>
                   </div>
                 </div>
               </div>
@@ -224,7 +224,7 @@
                 <div class="profile-card-name">{{ selectedAgent.username }}</div>
                 <div class="profile-card-meta">
                   <span v-if="selectedAgent.name" class="profile-card-handle">@{{ selectedAgent.name }}</span>
-                  <span class="profile-card-profession">{{ selectedAgent.profession || '未知职业' }}</span>
+                  <span class="profile-card-profession">{{ selectedAgent.profession || $t('step2.unknownProfession') }}</span>
                 </div>
               </div>
               <button class="profile-card-toggle" @click="showFullProfile = !showFullProfile">
@@ -235,7 +235,7 @@
             </div>
             <div v-if="showFullProfile && selectedAgent.bio" class="profile-card-body">
               <div class="profile-card-bio">
-                <div class="profile-card-label">简介</div>
+                <div class="profile-card-label">{{ $t('step5.profileBio') }}</div>
                 <p>{{ selectedAgent.bio }}</p>
               </div>
             </div>
@@ -250,7 +250,7 @@
                 </svg>
               </div>
               <p class="empty-text">
-                {{ chatTarget === 'report_agent' ? '与 Report Agent 对话，深入了解报告内容' : '与模拟个体对话，了解他们的观点' }}
+                {{ chatTarget === 'report_agent' ? $t('step5.chatEmptyReportAgent') : $t('step5.chatEmptyAgent') }}
               </p>
             </div>
             <div 
@@ -292,7 +292,7 @@
             <textarea 
               v-model="chatInput"
               class="chat-input"
-              placeholder="输入您的问题..."
+              :placeholder="$t('step5.chatInputPlaceholder')"
               @keydown.enter.exact.prevent="sendMessage"
               :disabled="isSending || (!selectedAgent && chatTarget === 'agent')"
               rows="1"
@@ -317,8 +317,8 @@
           <div class="survey-setup">
             <div class="setup-section">
               <div class="section-header">
-                <span class="section-title">选择调查对象</span>
-                <span class="selection-count">已选 {{ selectedAgents.size }} / {{ profiles.length }}</span>
+                <span class="section-title">{{ $t('step5.selectSurveyTarget') }}</span>
+                <span class="selection-count">{{ $t('step5.selectedCount', { selected: selectedAgents.size, total: profiles.length }) }}</span>
               </div>
               <div class="agents-grid">
                 <label 
@@ -335,7 +335,7 @@
                   <div class="checkbox-avatar">{{ (agent.username || 'A')[0] }}</div>
                   <div class="checkbox-info">
                     <span class="checkbox-name">{{ agent.username }}</span>
-                    <span class="checkbox-role">{{ agent.profession || '未知职业' }}</span>
+                    <span class="checkbox-role">{{ agent.profession || $t('step2.unknownProfession') }}</span>
                   </div>
                   <div class="checkbox-indicator">
                     <svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="3">
@@ -345,20 +345,20 @@
                 </label>
               </div>
               <div class="selection-actions">
-                <button class="action-link" @click="selectAllAgents">全选</button>
+                <button class="action-link" @click="selectAllAgents">{{ $t('step5.selectAll') }}</button>
                 <span class="action-divider">|</span>
-                <button class="action-link" @click="clearAgentSelection">清空</button>
+                <button class="action-link" @click="clearAgentSelection">{{ $t('step5.clearSelection') }}</button>
               </div>
             </div>
 
             <div class="setup-section">
               <div class="section-header">
-                <span class="section-title">问卷问题</span>
+                <span class="section-title">{{ $t('step5.surveyQuestions') }}</span>
               </div>
               <textarea 
                 v-model="surveyQuestion"
                 class="survey-input"
-                placeholder="输入您想问所有被选中对象的问题..."
+                :placeholder="$t('step5.surveyInputPlaceholder')"
                 rows="3"
               ></textarea>
             </div>
@@ -369,15 +369,15 @@
               @click="submitSurvey"
             >
               <span v-if="isSurveying" class="loading-spinner"></span>
-              <span v-else>发送问卷</span>
+              <span v-else>{{ $t('step5.submitSurvey') }}</span>
             </button>
           </div>
 
           <!-- Survey Results -->
           <div v-if="surveyResults.length > 0" class="survey-results">
             <div class="results-header">
-              <span class="results-title">调查结果</span>
-              <span class="results-count">{{ surveyResults.length }} 条回复</span>
+              <span class="results-title">{{ $t('step5.surveyResults') }}</span>
+              <span class="results-count">{{ $t('step5.surveyResultsCount', { count: surveyResults.length }) }}</span>
             </div>
             <div class="results-list">
               <div 
@@ -389,7 +389,7 @@
                   <div class="result-avatar">{{ (result.agent_name || 'A')[0] }}</div>
                   <div class="result-info">
                     <span class="result-name">{{ result.agent_name }}</span>
-                    <span class="result-role">{{ result.profession || '未知职业' }}</span>
+                    <span class="result-role">{{ result.profession || $t('step2.unknownProfession') }}</span>
                   </div>
                 </div>
                 <div class="result-question">
@@ -412,9 +412,12 @@
 
 <script setup>
 import { ref, computed, watch, onMounted, onUnmounted, nextTick } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { chatWithReport, getReport, getAgentLog } from '../api/report'
 import { interviewAgents, getSimulationProfilesRealtime } from '../api/simulation'
 
+const { t } = useI18n()
+
 const props = defineProps({
   reportId: String,
   simulationId: String
@@ -665,7 +668,7 @@ const sendMessage = async () => {
     addLog(`发送失败: ${err.message}`)
     chatHistory.value.push({
       role: 'assistant',
-      content: `抱歉，发生了错误: ${err.message}`,
+      content: t('step5.errorOccurred', { error: err.message }),
       timestamp: new Date().toISOString()
     })
   } finally {
@@ -697,18 +700,18 @@ const sendToReportAgent = async (message) => {
   if (res.success && res.data) {
     chatHistory.value.push({
       role: 'assistant',
-      content: res.data.response || res.data.answer || '无响应',
+      content: res.data.response || res.data.answer || t('step5.noResponse'),
       timestamp: new Date().toISOString()
     })
     addLog('Report Agent 已回复')
   } else {
-    throw new Error(res.error || '请求失败')
+    throw new Error(res.error || t('step5.requestFailed'))
   }
 }
 
 const sendToAgent = async (message) => {
   if (!selectedAgent.value || selectedAgentIndex.value === null) {
-    throw new Error('请先选择一个模拟个体')
+    throw new Error(t('step5.selectAgentFirst'))
   }
   
   addLog(`向 ${selectedAgent.value.username} 发送: ${message.substring(0, 50)}...`)
@@ -763,10 +766,10 @@ const sendToAgent = async (message) => {
       })
       addLog(`${selectedAgent.value.username} 已回复`)
     } else {
-      throw new Error('无响应数据')
+      throw new Error(t('step5.noResponse'))
     }
   } else {
-    throw new Error(res.error || '请求失败')
+    throw new Error(res.error || t('step5.requestFailed'))
   }
 }
 
@@ -830,20 +833,20 @@ const submitSurvey = async () => {
         const agent = profiles.value[agentIdx]
         
         // 优先使用 reddit 平台回复，其次 twitter
-        let responseContent = '无响应'
-        
+        let responseContent = t('step5.noResponse')
+
         if (typeof resultsDict === 'object' && !Array.isArray(resultsDict)) {
           const redditKey = `reddit_${agentIdx}`
           const twitterKey = `twitter_${agentIdx}`
           const agentResult = resultsDict[redditKey] || resultsDict[twitterKey]
           if (agentResult) {
-            responseContent = agentResult.response || agentResult.answer || '无响应'
+            responseContent = agentResult.response || agentResult.answer || t('step5.noResponse')
           }
         } else if (Array.isArray(resultsDict)) {
           // 兼容数组格式
           const matchedResult = resultsDict.find(r => r.agent_id === agentIdx)
           if (matchedResult) {
-            responseContent = matchedResult.response || matchedResult.answer || '无响应'
+            responseContent = matchedResult.response || matchedResult.answer || t('step5.noResponse')
           }
         }
         
@@ -859,7 +862,7 @@ const submitSurvey = async () => {
       surveyResults.value = surveyResultsList
       addLog(`收到 ${surveyResults.value.length} 条回复`)
     } else {
-      throw new Error(res.error || '请求失败')
+      throw new Error(res.error || t('step5.requestFailed'))
     }
   } catch (err) {
     addLog(`问卷发送失败: ${err.message}`)
diff --git a/locales/en.json b/locales/en.json
index a802e94..761127e 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -172,7 +172,9 @@
     "genderMale": "Male",
     "genderFemale": "Female",
     "genderOther": "Other",
-    "yearsOld": "years old"
+    "yearsOld": "years old",
+    "initializing": "Initializing",
+    "generating": "Generating"
   },
   "step3": {
     "startGenerateReport": "Generate Result Report",
@@ -201,7 +203,9 @@
     "stoppingProcess": "Stopping simulation process...",
     "checkStatusFailed": "Failed to check simulation status: {error}",
     "forceStopSuccess": "Simulation force stopped",
-    "forceStopFailed": "Force stop failed: {error}"
+    "forceStopFailed": "Force stop failed: {error}",
+    "startGenerateReportBtn": "Generate Result Report",
+    "generatingReportBtn": "Starting..."
   },
   "step4": {
     "generatingSection": "Generating {title}...",
@@ -237,7 +241,11 @@
     "surveyResults": "Survey Results",
     "surveyResultsCount": "{count} responses",
     "selectAll": "Select All",
-    "clearSelection": "Clear"
+    "clearSelection": "Clear",
+    "errorOccurred": "Sorry, an error occurred: {error}",
+    "noResponse": "No response",
+    "requestFailed": "Request failed",
+    "selectAgentFirst": "Please select a simulated individual first"
   },
   "graph": {
     "panelTitle": "Graph Relationship Visualization",
@@ -246,7 +254,11 @@
     "realtimeUpdating": "Updating in real-time...",
     "pendingContentHint": "Some content is still processing. Consider refreshing the graph manually later.",
     "nodeDetails": "Node Details",
-    "relationship": "Relationship"
+    "relationship": "Relationship",
+    "graphDataLoading": "Loading graph data...",
+    "waitingOntology": "Waiting for ontology generation...",
+    "toggleMaximize": "Maximize/Restore",
+    "closeHint": "Close hint"
   },
   "history": {
     "title": "Simulation History",
@@ -263,7 +275,11 @@
     "step1Button": "Graph Build",
     "step2Button": "Env Setup",
     "step4Button": "Analysis Report",
-    "replayHint": "Step 3 'Run Simulation' and Step 5 'Deep Interaction' must be started during runtime and do not support history replay"
+    "replayHint": "Step 3 'Run Simulation' and Step 5 'Deep Interaction' must be started during runtime and do not support history replay",
+    "notStarted": "Not started",
+    "roundsProgress": "{current}/{total} rounds",
+    "untitledSimulation": "Untitled simulation",
+    "unknownFile": "Unknown file"
   },
   "api": {
     "projectNotFound": "Project not found: {id}",
diff --git a/locales/zh.json b/locales/zh.json
index c95f9c3..55bd9cf 100644
--- a/locales/zh.json
+++ b/locales/zh.json
@@ -172,7 +172,9 @@
     "genderMale": "男",
     "genderFemale": "女",
     "genderOther": "其他",
-    "yearsOld": "岁"
+    "yearsOld": "岁",
+    "initializing": "初始化",
+    "generating": "生成中"
   },
   "step3": {
     "startGenerateReport": "开始生成结果报告",
@@ -201,7 +203,9 @@
     "stoppingProcess": "正在停止模拟进程...",
     "checkStatusFailed": "检查模拟状态失败: {error}",
     "forceStopSuccess": "模拟已强制停止",
-    "forceStopFailed": "强制停止失败: {error}"
+    "forceStopFailed": "强制停止失败: {error}",
+    "startGenerateReportBtn": "开始生成结果报告",
+    "generatingReportBtn": "启动中..."
   },
   "step4": {
     "generatingSection": "正在生成{title}...",
@@ -237,7 +241,11 @@
     "surveyResults": "调查结果",
     "surveyResultsCount": "{count} 条回复",
     "selectAll": "全选",
-    "clearSelection": "清空"
+    "clearSelection": "清空",
+    "errorOccurred": "抱歉，发生了错误: {error}",
+    "noResponse": "无响应",
+    "requestFailed": "请求失败",
+    "selectAgentFirst": "请先选择一个模拟个体"
   },
   "graph": {
     "panelTitle": "Graph Relationship Visualization",
@@ -246,7 +254,11 @@
     "realtimeUpdating": "实时更新中...",
     "pendingContentHint": "还有少量内容处理中，建议稍后手动刷新图谱",
     "nodeDetails": "Node Details",
-    "relationship": "Relationship"
+    "relationship": "Relationship",
+    "graphDataLoading": "图谱数据加载中...",
+    "waitingOntology": "等待本体生成...",
+    "toggleMaximize": "最大化/还原",
+    "closeHint": "关闭提示"
   },
   "history": {
     "title": "推演记录",
@@ -263,7 +275,11 @@
     "step1Button": "图谱构建",
     "step2Button": "环境搭建",
     "step4Button": "分析报告",
-    "replayHint": "Step3「开始模拟」与 Step5「深度互动」需在运行中启动，不支持历史回放"
+    "replayHint": "Step3「开始模拟」与 Step5「深度互动」需在运行中启动，不支持历史回放",
+    "notStarted": "未开始",
+    "roundsProgress": "{current}/{total} 轮",
+    "untitledSimulation": "未命名模拟",
+    "unknownFile": "未知文件"
   },
   "api": {
     "projectNotFound": "项目不存在: {id}",