diff --git a/web_ui/src/components/ConfigPanel.vue b/web_ui/src/components/ConfigPanel.vue
index 7607fed..5426f09 100644
--- a/web_ui/src/components/ConfigPanel.vue
+++ b/web_ui/src/components/ConfigPanel.vue
@@ -6,7 +6,7 @@
       <!-- 最大页数 -->
       <el-form-item :label="$t('config.maxPages')" class="form-item">
         <el-slider 
-          v-model="config.maxPages" 
+          v-model="draftConfig.maxPages" 
           :min="1" 
           :max="1000" 
           show-input
@@ -17,7 +17,7 @@
       <!-- 解析后端 -->
       <el-form-item :label="$t('config.backend')" class="form-item">
         <el-select 
-          v-model="config.backend" 
+          v-model="draftConfig.backend" 
           style="width: 100%"
           @change="onBackendChange"
           class="select"
@@ -30,7 +30,7 @@
           />
         </el-select>
         <div class="form-item-description">
-          {{ getBackendDescription(config.backend) }}
+          {{ getBackendDescription(draftConfig.backend) }}
         </div>
       </el-form-item>
       
@@ -41,7 +41,7 @@
         class="form-item"
       >
         <el-input 
-          v-model="config.serverUrl" 
+          v-model="draftConfig.serverUrl" 
           :placeholder="'http://localhost:30000'"
           class="input"
         />
@@ -57,7 +57,7 @@
       
       <!-- 表格识别 -->
       <el-form-item class="form-item">
-        <el-checkbox v-model="config.tableEnable" class="checkbox">
+        <el-checkbox v-model="draftConfig.tableEnable" class="checkbox">
           {{ $t('config.tableEnable') }}
         </el-checkbox>
         <div class="form-item-description">
@@ -67,11 +67,11 @@
       
       <!-- 公式识别 -->
       <el-form-item class="form-item">
-        <el-checkbox v-model="config.formulaEnable" class="checkbox">
-          {{ getFormulaLabel(config.backend) }}
+        <el-checkbox v-model="draftConfig.formulaEnable" class="checkbox">
+          {{ getFormulaLabel(draftConfig.backend) }}
         </el-checkbox>
         <div class="form-item-description">
-          {{ getFormulaInfo(config.backend) }}
+          {{ getFormulaInfo(draftConfig.backend) }}
         </div>
       </el-form-item>
       
@@ -81,7 +81,7 @@
         
         <!-- OCR语言 -->
         <el-form-item :label="$t('config.ocrLanguage')" class="form-item">
-          <el-select v-model="config.language" style="width: 100%" class="select">
+          <el-select v-model="draftConfig.language" style="width: 100%" class="select">
             <el-option
               v-for="option in languageOptions"
               :key="option.value"
@@ -96,7 +96,7 @@
         
         <!-- 强制OCR -->
         <el-form-item class="form-item">
-          <el-checkbox v-model="config.forceOcr" class="checkbox">
+          <el-checkbox v-model="draftConfig.forceOcr" class="checkbox">
             {{ $t('config.forceOcr') }}
           </el-checkbox>
           <div class="form-item-description">
@@ -104,12 +104,17 @@
           </div>
         </el-form-item>
       </template>
+      <div class="config-actions">
+        <el-button @click="resetDraft">重置</el-button>
+        <el-button type="primary" @click="confirmConfig">确认</el-button>
+      </div>
     </el-form>
   </div>
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, reactive, watch } from 'vue'
+import { ElMessage } from 'element-plus'
 import type { DocumentConfig } from '@/composables/useDocumentProcessor'
 
 interface Props {
@@ -126,21 +131,42 @@ interface Emits {
 const props = defineProps<Props>()
 const emit = defineEmits<Emits>()
 
-const config = computed({
-  get: () => props.modelValue,
-  set: (value) => emit('update:modelValue', value)
-})
+const createDraft = (value: DocumentConfig): DocumentConfig => ({ ...value })
+const draftConfig = reactive<DocumentConfig>(createDraft(props.modelValue))
+
+const syncDraft = (value: DocumentConfig) => {
+  Object.assign(draftConfig, createDraft(value))
+}
+
+watch(
+  () => props.modelValue,
+  (value) => syncDraft(value),
+  { deep: true }
+)
 
 const showServerUrl = computed(() => {
-  return props.modelValue.backend.includes('http-client')
+  return draftConfig.backend.includes('http-client')
 })
 
 const isVlmBackend = computed(() => {
-  return props.modelValue.backend.startsWith('vlm')
+  return draftConfig.backend.startsWith('vlm')
 })
 
 const onBackendChange = (backend: string) => {
-  emit('backendChange', backend)
+  if (!backend.includes('http-client')) {
+    draftConfig.serverUrl = props.modelValue.serverUrl
+  }
+}
+
+const resetDraft = () => {
+  syncDraft(props.modelValue)
+}
+
+const confirmConfig = () => {
+  const confirmed = createDraft(draftConfig)
+  emit('update:modelValue', confirmed)
+  emit('backendChange', confirmed.backend)
+  ElMessage.success('设置已确认')
 }
 
 const getFormulaLabel = (backend: string) => {
@@ -224,6 +250,14 @@ const getBackendDescription = (backend: string) => {
   line-height: 1.4;
 }
 
+.config-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  padding-top: 8px;
+  border-top: 1px solid #E4E7ED;
+}
+
 .slider :deep(.el-slider__runway) {
   background-color: #E4E7ED;
 }
@@ -270,4 +304,4 @@ const getBackendDescription = (backend: string) => {
 .checkbox :deep(.el-checkbox__label) {
   color: #303133;
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/web_ui/src/components/MindMapRenderer.vue b/web_ui/src/components/MindMapRenderer.vue
index 4ea14a4..75900a9 100644
--- a/web_ui/src/components/MindMapRenderer.vue
+++ b/web_ui/src/components/MindMapRenderer.vue
@@ -18,6 +18,7 @@
           <el-dropdown-menu>
             <el-dropdown-item command="svg">SVG 格式</el-dropdown-item>
             <el-dropdown-item command="png">PNG 格式</el-dropdown-item>
+            <el-dropdown-item command="jpeg">JPEG 格式</el-dropdown-item>
           </el-dropdown-menu>
         </template>
       </el-dropdown>
@@ -33,20 +34,25 @@
         重置视图
       </el-button>
     </div>
-    <div class="mindmap-content" @wheel.prevent="handleWheel">
+    <div class="mindmap-content" @wheel.prevent="handleWheel" @click="handleNodeClick">
       <div class="empty-state" v-if="!content">
         <el-icon class="empty-icon"><Document /></el-icon>
         <p class="empty-text">暂无思维导图内容</p>
         <p class="empty-subtext">请先上传并转换文档</p>
       </div>
-      <svg ref="svgRef" class="markmap-svg" v-else></svg>
+      <div class="mindmap-loading" v-if="content && isRendering">
+        <el-icon class="loading-icon"><Loading /></el-icon>
+        <span>正在生成导图...</span>
+      </div>
+      <svg ref="svgRef" class="markmap-svg" v-show="content"></svg>
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
 import { ref, computed, onMounted, watch, onUnmounted, nextTick } from 'vue'
-import { Download, Refresh, ZoomIn, ZoomOut, Document, ArrowDown } from '@element-plus/icons-vue'
+import { Download, Refresh, Document, ArrowDown, Loading } from '@element-plus/icons-vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
 
 // 导入 markmap 相关包
 import { Transformer } from 'markmap-lib'
@@ -59,14 +65,19 @@ const props = defineProps({
   }
 })
 
+const emit = defineEmits<{
+  (e: 'node-edit', payload: { oldText: string; newText: string }): void
+}>()
+
 const svgRef = ref<SVGElement | null>(null)
 let mmInstance: any = null
+let renderTimer: number | undefined
 const transformer = new Transformer()
 const scale = ref(1)
+const isRendering = ref(false)
 
 const nodeCount = computed(() => {
   if (!props.content) return 0
-  // 简单计算节点数量（基于Markdown标题）
   return (props.content.match(/^#{1,6}\s+/gm) || []).length
 })
 
@@ -82,60 +93,56 @@ const initMarkmap = async () => {
     return
   }
 
-  try {
-    console.log('Initializing markmap with content:', props.content.substring(0, 100) + '...')
-    
-    // 1. 转换数据
-    const { root, features } = transformer.transform(props.content)
-    console.log('Transformed root:', root)
+  isRendering.value = true
 
-    // 2. 加载必要的资源
+  try {
+    const { root } = transformer.transform(props.content)
     const { styles, scripts } = transformer.getAssets()
-    console.log('Styles:', styles)
-    console.log('Scripts:', scripts)
     
     if (styles) loadCSS(styles)
     if (scripts) loadJS(scripts)
 
-    // 3. 创建或更新实例
     await nextTick()
-    console.log('SVG ref:', svgRef.value)
-    console.log('Markmap.create:', Markmap.create)
+
+    const initialExpandLevel = nodeCount.value > 80 ? 2 : -1
     
     if (mmInstance) {
-      console.log('Updating existing instance')
       if (typeof mmInstance.setData === 'function') {
         mmInstance.setData(root)
         mmInstance.fit()
       } else {
-        console.error('mmInstance does not have setData method:', mmInstance)
-        // 创建新实例
         mmInstance = Markmap.create(svgRef.value, {
           autoFit: true,
           fitRatio: 0.9,
-          initialExpandLevel: -1
+          initialExpandLevel
         }, root)
-        console.log('Created new instance after setData error:', mmInstance)
       }
     } else {
-      console.log('Creating new instance')
       mmInstance = Markmap.create(svgRef.value, {
         autoFit: true,
         fitRatio: 0.9,
-        initialExpandLevel: -1
+        initialExpandLevel
       }, root)
-      console.log('Created instance using Markmap.create:', mmInstance)
-      console.log('mmInstance methods:', Object.keys(mmInstance))
     }
+
+    await nextTick()
+    svgRef.value?.querySelectorAll('text').forEach((text) => {
+      text.setAttribute('data-editable-node', 'true')
+    })
   } catch (error) {
     console.error('Error initializing markmap:', error)
     mmInstance = null
+  } finally {
+    isRendering.value = false
   }
 }
 
 // 监听内容变化自动重绘
 watch(() => props.content, () => {
-  initMarkmap()
+  window.clearTimeout(renderTimer)
+  renderTimer = window.setTimeout(() => {
+    initMarkmap()
+  }, 160)
 })
 
 onMounted(() => {
@@ -145,6 +152,7 @@ onMounted(() => {
 })
 
 onUnmounted(() => {
+  window.clearTimeout(renderTimer)
   window.removeEventListener('resize', handleResize)
   if (mmInstance && typeof mmInstance.destroy === 'function') {
     mmInstance.destroy()
@@ -157,111 +165,87 @@ const handleResize = () => {
   mmInstance?.fit()
 }
 
+function downloadBlob(blob: Blob, fileName: string) {
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement('a')
+  a.href = url
+  a.download = fileName
+  document.body.appendChild(a)
+  a.click()
+  document.body.removeChild(a)
+  URL.revokeObjectURL(url)
+}
+
+function createExportSvg() {
+  const svg = svgRef.value
+  if (!svg) return null
+
+  const svgCopy = svg.cloneNode(true) as SVGElement
+  if (!svgCopy.getAttribute('xmlns')) {
+    svgCopy.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
+  }
+
+  const contentGroup = svg.querySelector('g')
+  const bbox = contentGroup
+    ? (contentGroup as SVGGElement).getBBox()
+    : svg.getBBox()
+
+  const padding = 48
+  const width = Math.ceil(Math.max(bbox.width + padding * 2, 320))
+  const height = Math.ceil(Math.max(bbox.height + padding * 2, 240))
+  const viewBox = `${Math.floor(bbox.x - padding)} ${Math.floor(bbox.y - padding)} ${width} ${height}`
+
+  svgCopy.setAttribute('viewBox', viewBox)
+  svgCopy.setAttribute('width', String(width))
+  svgCopy.setAttribute('height', String(height))
+  svgCopy.querySelectorAll('[style*="cursor"]').forEach((node) => node.removeAttribute('style'))
+
+  return {
+    data: new XMLSerializer().serializeToString(svgCopy),
+    width,
+    height
+  }
+}
+
 // 下载思维导图
-const downloadMindMap = (format: 'svg' | 'png' = 'svg') => {
-  if (!svgRef.value) return
-  
-  // 确保思维导图已经完全渲染
-  if (mmInstance) {
-    mmInstance.fit()
-  }
-  
+const downloadMindMap = async (format: 'svg' | 'png' | 'jpeg' = 'svg') => {
+  const exportSvg = createExportSvg()
+  if (!exportSvg) return
+
+  const time = new Date().getTime()
   if (format === 'svg') {
-    const svg = svgRef.value
-    // 复制 SVG 元素以确保获取完整结构
-    const svgCopy = svg.cloneNode(true) as SVGElement
-    
-    // 添加必要的命名空间
-    if (!svgCopy.getAttribute('xmlns')) {
-      svgCopy.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
-    }
-    
-    // 确保 SVG 大小正确
-    const boundingRect = svg.getBoundingClientRect()
-    svgCopy.setAttribute('width', boundingRect.width.toString())
-    svgCopy.setAttribute('height', boundingRect.height.toString())
-    
-    // 序列化 SVG
-    const svgData = new XMLSerializer().serializeToString(svgCopy)
-    const blob = new Blob([svgData], { type: 'image/svg+xml' })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = `mindmap_${new Date().getTime()}.svg`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
-  } else if (format === 'png') {
-    const svg = svgRef.value
-    // 复制 SVG 元素以确保获取完整结构
-    const svgCopy = svg.cloneNode(true) as SVGElement
-    
-    // 添加必要的命名空间
-    if (!svgCopy.getAttribute('xmlns')) {
-      svgCopy.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
-    }
-    
-    // 确保思维导图已经完全渲染并适应视图
-    if (mmInstance) {
-      mmInstance.fit()
-    }
-    
-    // 获取 SVG 元素的实际内容大小
-    const boundingRect = svg.getBoundingClientRect()
-    
-    // 为大型思维导图设置更高的缩放因子
-    const scaleFactor = 5 // 从 3 提高到 5，进一步提高分辨率
-    
-    // 设置 SVG 大小为实际内容大小
-    const svgWidth = boundingRect.width
-    const svgHeight = boundingRect.height
-    svgCopy.setAttribute('width', svgWidth.toString())
-    svgCopy.setAttribute('height', svgHeight.toString())
-    
-    // 序列化 SVG
-    const svgData = new XMLSerializer().serializeToString(svgCopy)
-    const canvas = document.createElement('canvas')
-    const ctx = canvas.getContext('2d')
-    
-    if (!ctx) return
-    
-    // 设置画布大小为原始大小的 scaleFactor 倍，提高分辨率
-    canvas.width = svgWidth * scaleFactor
-    canvas.height = svgHeight * scaleFactor
-    
-    // 缩放画布上下文，确保绘制时保持清晰度
-    ctx.scale(scaleFactor, scaleFactor)
-    
-    // 创建一个图像对象
-    const img = new Image()
-    img.onload = () => {
-      // 绘制图像到画布
-      ctx.drawImage(img, 0, 0)
-      
-      // 将画布转换为 PNG，设置质量为最高
-      canvas.toBlob((blob) => {
-        if (blob) {
-          const url = URL.createObjectURL(blob)
-          const a = document.createElement('a')
-          a.href = url
-          a.download = `mindmap_${new Date().getTime()}.png`
-          document.body.appendChild(a)
-          a.click()
-          document.body.removeChild(a)
-          URL.revokeObjectURL(url)
-        }
-      }, 'image/png', 1.0) // 设置质量为 1.0
-    }
-    
-    // 将 SVG 数据转换为 Data URL
-    img.src = 'data:image/svg+xml;charset=utf-8,' + encodeURIComponent(svgData)
+    downloadBlob(new Blob([exportSvg.data], { type: 'image/svg+xml;charset=utf-8' }), `mindmap_${time}.svg`)
+    return
   }
+
+  const maxCanvasPixels = 16_000_000
+  const scaleFactor = Math.min(3, Math.max(1, Math.sqrt(maxCanvasPixels / (exportSvg.width * exportSvg.height))))
+  const canvas = document.createElement('canvas')
+  const ctx = canvas.getContext('2d')
+  if (!ctx) return
+
+  canvas.width = Math.ceil(exportSvg.width * scaleFactor)
+  canvas.height = Math.ceil(exportSvg.height * scaleFactor)
+  ctx.fillStyle = '#ffffff'
+  ctx.fillRect(0, 0, canvas.width, canvas.height)
+  ctx.scale(scaleFactor, scaleFactor)
+
+  const img = new Image()
+  img.onload = () => {
+    ctx.drawImage(img, 0, 0)
+    const mimeType = format === 'jpeg' ? 'image/jpeg' : 'image/png'
+    canvas.toBlob((blob) => {
+      if (!blob) return
+      downloadBlob(blob, `mindmap_${time}.${format === 'jpeg' ? 'jpg' : 'png'}`)
+    }, mimeType, 0.96)
+  }
+  img.onerror = () => ElMessage.error('导出图片失败')
+  img.src = 'data:image/svg+xml;charset=utf-8,' + encodeURIComponent(exportSvg.data)
 }
 
 // 处理下载命令
 const handleDownload = (command: string) => {
-  if (command === 'svg' || command === 'png') {
+  if (command === 'svg' || command === 'png' || command === 'jpeg') {
     downloadMindMap(command)
   }
 }
@@ -306,6 +290,27 @@ const handleWheel = (event: WheelEvent) => {
     applyZoom()
   }
 }
+
+const handleNodeClick = async (event: MouseEvent) => {
+  const textNode = (event.target as Element | null)?.closest?.('text')
+  const oldText = textNode?.textContent?.trim()
+  if (!oldText || !props.content || oldText === '文档思维导图') return
+
+  try {
+    const { value } = await ElMessageBox.prompt('编辑节点文本', '编辑思维导图节点', {
+      inputValue: oldText,
+      confirmButtonText: '确认',
+      cancelButtonText: '取消',
+      inputValidator: (value) => Boolean(value.trim()) || '节点文本不能为空'
+    })
+    const newText = String(value).trim()
+    if (newText && newText !== oldText) {
+      emit('node-edit', { oldText, newText })
+    }
+  } catch {
+    // 用户取消编辑
+  }
+}
 </script>
 
 <style scoped>
@@ -392,6 +397,28 @@ const handleWheel = (event: WheelEvent) => {
   gap: 16px;
 }
 
+.mindmap-loading {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  color: #4E5969;
+  background: rgba(249, 250, 252, 0.82);
+  z-index: 2;
+}
+
+.loading-icon {
+  color: #165DFF;
+  animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+  from { transform: rotate(0deg); }
+  to { transform: rotate(360deg); }
+}
+
 .empty-icon {
   font-size: 48px;
   color: #C9CDD4;
@@ -416,6 +443,10 @@ const handleWheel = (event: WheelEvent) => {
   transition: transform 0.2s ease;
 }
 
+.markmap-svg :deep(text[data-editable-node="true"]) {
+  cursor: text;
+}
+
 /* 响应式设计 */
 @media (max-width: 768px) {
   .mindmap-header {
diff --git a/web_ui/src/composables/useDocumentProcessor.ts b/web_ui/src/composables/useDocumentProcessor.ts
index e399f98..e292e8d 100644
--- a/web_ui/src/composables/useDocumentProcessor.ts
+++ b/web_ui/src/composables/useDocumentProcessor.ts
@@ -2,55 +2,11 @@ import { ref, reactive } from 'vue'
 import type { Ref } from 'vue'
 import { documentApi, type ParseParams } from '@/api/document'
 import { convertWordToPdf, isWordFile } from '@/utils/wordToPdf'
+import { buildMindmapMarkdown } from '@/utils/mindmapMarkdown'
 
 // 根据上一级标题自动补全下一级标题
 export function autoPromoteParagraphsToSubheading(text: string): string {
-  const lines = text.split('\n')
-  const result: string[] = []
-  let inSection = false
-  let currentHeadingLevel = 0 // 记录当前标题级别
-  
-  for (const line of lines) {
-    const stripped = line.trim()
-    
-    // 检测标题级别
-    if (stripped.startsWith('#')) {
-      // 计算标题级别（连续的#数量）
-      const headingMatch = stripped.match(/^#+/)  
-      if (headingMatch) {
-        currentHeadingLevel = headingMatch[0].length
-      } else {
-        currentHeadingLevel = 0
-      }
-      result.push(line)
-      inSection = true
-      continue
-    }
-    
-    if (!stripped) {
-      // 空行不需要添加标题，但也不退出标题段落模式
-      result.push(line)
-      continue
-    }
-    
-    // 跳过图片行
-    if (stripped.startsWith('![')) {
-      result.push(line)
-      continue
-    }
-    
-    // 其他特殊行（列表、代码等）都统一处理
-    if (inSection && currentHeadingLevel > 0 && currentHeadingLevel < 6) {
-      // 根据当前标题级别生成下一级标题
-      const nextHeadingLevel = currentHeadingLevel + 1
-      const headingPrefix = '#'.repeat(nextHeadingLevel)
-      result.push(headingPrefix + ' ' + stripped)
-    } else {
-      result.push(line)
-    }
-  }
-  
-  return result.join('\n')
+  return buildMindmapMarkdown(text)
 }
 
 export interface DocumentConfig {
@@ -89,6 +45,7 @@ export function useDocumentProcessor() {
   // 结果相关
   const results = ref<ProcessResult | null>(null)
   const isProcessing = ref(false)
+  const processingStage = ref('')
   const error = ref<string | null>(null)
   
   // 后端选项
@@ -185,6 +142,7 @@ export function useDocumentProcessor() {
     uploadedFiles.value = []
     results.value = null
     error.value = null
+    processingStage.value = ''
   }
 
   // 演示模式：上传文件后由用户手动粘贴 Markdown 源码
@@ -206,8 +164,10 @@ export function useDocumentProcessor() {
     
     isProcessing.value = true
     error.value = null
+    processingStage.value = '准备提交解析任务'
     
     try {
+      processingStage.value = '提交文档到解析服务'
       const params: ParseParams = {
         files: uploadedFiles.value,
         output_dir: './output',
@@ -227,22 +187,25 @@ export function useDocumentProcessor() {
         params.server_url = config.serverUrl
       }
       
+      processingStage.value = '服务端正在解析文档'
       const response = await documentApi.parseDocument(params)
       
       if (response.results) {
+        processingStage.value = '生成 Markdown 和思维导图'
         const resultData = Object.values(response.results)[0]
         const mdContent = resultData.md_content || ''
-        const processedSource = autoPromoteParagraphsToSubheading(mdContent)
+        const mindmapContent = buildMindmapMarkdown(mdContent)
         results.value = {
           markdown: mdContent,
-          source: processedSource,
-          mindmap: processedSource
+          source: mdContent,
+          mindmap: mindmapContent
         }
       }
       
     } catch (err: any) {
       error.value = err.message || '转换失败'
     } finally {
+      processingStage.value = ''
       isProcessing.value = false
     }
   }
@@ -278,6 +241,7 @@ export function useDocumentProcessor() {
     results,
     isUploading,
     isProcessing,
+    processingStage,
     error,
     
     // 选项
diff --git a/web_ui/src/utils/mindmapMarkdown.ts b/web_ui/src/utils/mindmapMarkdown.ts
new file mode 100644
index 0000000..9cc8883
--- /dev/null
+++ b/web_ui/src/utils/mindmapMarkdown.ts
@@ -0,0 +1,181 @@
+const MAX_NODE_TEXT_LENGTH = 72
+const MAX_PARAGRAPH_SUMMARY_LENGTH = 90
+const MAX_CHILDREN_PER_HEADING = 18
+const ROOT_TITLE = '文档思维导图'
+
+type BlockType = 'paragraph' | 'list' | 'table' | 'code' | 'math' | 'image'
+
+interface HeadingState {
+  level: number
+  childCount: number
+}
+
+function normalizeWhitespace(text: string) {
+  return text.replace(/\s+/g, ' ').trim()
+}
+
+function stripMarkdownInline(text: string) {
+  return normalizeWhitespace(text)
+    .replace(/!\[([^\]]*)\]\([^)]+\)/g, '$1')
+    .replace(/\[([^\]]+)\]\([^)]+\)/g, '$1')
+    .replace(/[*_`~>#]/g, '')
+}
+
+function truncateText(text: string, maxLength = MAX_NODE_TEXT_LENGTH) {
+  const normalized = normalizeWhitespace(text)
+  if (normalized.length <= maxLength) return normalized
+  return `${normalized.slice(0, maxLength - 1)}...`
+}
+
+function summarizeParagraph(text: string) {
+  const cleaned = stripMarkdownInline(text)
+  const sentence = cleaned.match(/^(.+?[。！？!?；;：:]|\S.{20,}?[,，])/)
+  return truncateText(sentence?.[1] || cleaned, MAX_PARAGRAPH_SUMMARY_LENGTH)
+}
+
+function isHeading(line: string) {
+  return /^#{1,6}\s+/.test(line.trim())
+}
+
+function getHeadingLevel(line: string) {
+  return line.trim().match(/^#{1,6}/)?.[0].length || 0
+}
+
+function getHeadingText(line: string) {
+  return stripMarkdownInline(line.trim().replace(/^#{1,6}\s+/, ''))
+}
+
+function getListText(line: string) {
+  return stripMarkdownInline(line.trim().replace(/^[-*+]\s+|^\d+[.)、]\s+/, ''))
+}
+
+function countHeadingChildren(stack: HeadingState[], level: number) {
+  while (stack.length && stack[stack.length - 1].level >= level) {
+    stack.pop()
+  }
+
+  const parent = stack[stack.length - 1]
+  if (!parent) return true
+  parent.childCount += 1
+  return parent.childCount <= MAX_CHILDREN_PER_HEADING
+}
+
+function pushBlock(result: string[], stack: HeadingState[], blockType: BlockType, text: string) {
+  const cleaned = text.trim()
+  if (!cleaned) return
+
+  const parentLevel = stack.length ? stack[stack.length - 1].level : 1
+  const level = Math.min(parentLevel + 1, 6)
+  if (!countHeadingChildren(stack, level)) return
+
+  const prefixMap: Record<BlockType, string> = {
+    paragraph: '摘要',
+    list: '要点',
+    table: '表格',
+    code: '代码',
+    math: '公式',
+    image: '图片'
+  }
+
+  result.push(`${'#'.repeat(level)} ${prefixMap[blockType]}：${cleaned}`)
+}
+
+export function buildMindmapMarkdown(markdown: string) {
+  const lines = markdown.split(/\r?\n/)
+  const result: string[] = [`# ${ROOT_TITLE}`]
+  const stack: HeadingState[] = [{ level: 1, childCount: 0 }]
+  let paragraphBuffer: string[] = []
+  let inCodeBlock = false
+  let codeBlockTitle = ''
+
+  const flushParagraph = () => {
+    if (paragraphBuffer.length === 0) return
+    const text = summarizeParagraph(paragraphBuffer.join(' '))
+    pushBlock(result, stack, 'paragraph', text)
+    paragraphBuffer = []
+  }
+
+  for (const line of lines) {
+    const trimmed = line.trim()
+
+    if (/^```/.test(trimmed)) {
+      if (inCodeBlock) {
+        pushBlock(result, stack, 'code', codeBlockTitle || '代码块')
+        codeBlockTitle = ''
+      } else {
+        flushParagraph()
+        codeBlockTitle = trimmed.replace(/^```/, '').trim()
+      }
+      inCodeBlock = !inCodeBlock
+      continue
+    }
+
+    if (inCodeBlock) continue
+
+    if (!trimmed) {
+      flushParagraph()
+      continue
+    }
+
+    if (isHeading(trimmed)) {
+      flushParagraph()
+      const rawLevel = getHeadingLevel(trimmed)
+      const level = Math.min(rawLevel + 1, 6)
+      while (stack.length && stack[stack.length - 1].level >= level) {
+        stack.pop()
+      }
+      result.push(`${'#'.repeat(level)} ${truncateText(getHeadingText(trimmed)) || '未命名章节'}`)
+      stack.push({ level, childCount: 0 })
+      continue
+    }
+
+    if (/^\|.+\|$/.test(trimmed)) {
+      flushParagraph()
+      pushBlock(result, stack, 'table', '表格内容')
+      continue
+    }
+
+    if (/^!\[[^\]]*]\([^)]+\)/.test(trimmed)) {
+      flushParagraph()
+      pushBlock(result, stack, 'image', stripMarkdownInline(trimmed) || '图片')
+      continue
+    }
+
+    if (/^\$\$.*\$\$$/.test(trimmed) || /^\$[^$].*\$$/.test(trimmed)) {
+      flushParagraph()
+      pushBlock(result, stack, 'math', truncateText(trimmed, 80))
+      continue
+    }
+
+    if (/^[-*+]\s+|^\d+[.)、]\s+/.test(trimmed)) {
+      flushParagraph()
+      pushBlock(result, stack, 'list', truncateText(getListText(trimmed)))
+      continue
+    }
+
+    paragraphBuffer.push(trimmed)
+  }
+
+  flushParagraph()
+  return result.join('\n')
+}
+
+export function replaceFirstMindmapText(markdown: string, oldText: string, newText: string) {
+  const normalizedOld = oldText.replace(/^(摘要|要点|表格|代码|公式|图片)：/, '').trim()
+  if (!normalizedOld || !newText.trim()) return markdown
+
+  const escaped = normalizedOld.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+  const directMatch = new RegExp(escaped)
+  if (directMatch.test(markdown)) {
+    return markdown.replace(directMatch, newText.trim())
+  }
+
+  const lines = markdown.split(/\r?\n/)
+  const targetLineIndex = lines.findIndex((line) => stripMarkdownInline(line).includes(normalizedOld))
+  if (targetLineIndex >= 0) {
+    lines[targetLineIndex] = lines[targetLineIndex].replace(normalizedOld, newText.trim())
+    return lines.join('\n')
+  }
+
+  return markdown
+}
diff --git a/web_ui/src/views/DocumentProcessor.vue b/web_ui/src/views/DocumentProcessor.vue
index 9970fd5..cadd825 100644
--- a/web_ui/src/views/DocumentProcessor.vue
+++ b/web_ui/src/views/DocumentProcessor.vue
@@ -20,7 +20,7 @@
           <div class="upload-content" v-show="!isUploadAreaCollapsed">
             <el-icon class="upload-icon"><Folder /></el-icon>
             <div class="upload-text">文件导入</div>
-            <div class="upload-hint">支持PDF、Word、PNG格式文件，上传后可手动粘贴 Markdown 源码用于演示</div>
+            <div class="upload-hint">支持 PDF、Word、PNG 格式文件，可转换为 Markdown 和思维导图，也可手动粘贴 Markdown 源码</div>
           </div>
 
           <div class="uploaded-files">
@@ -35,6 +35,13 @@
               />
             </div>
           </div>
+
+          <div class="upload-actions" v-if="uploadedFiles.length > 0">
+            <el-button type="primary" :loading="isProcessing || isUploading" @click.stop="handleProcessDocument">
+              开始转换
+            </el-button>
+            <el-button @click.stop="clearAllFiles">清空</el-button>
+          </div>
         </div>
 
         <div v-if="showSettings" class="settings-panel">
@@ -97,7 +104,7 @@
         <div class="result-content">
           <div v-if="isProcessing" class="loading-container">
             <el-icon class="loading-icon"><Loading /></el-icon>
-            <p class="loading-text">正在处理文档...</p>
+            <p class="loading-text">{{ processingStage || '正在处理文档...' }}</p>
           </div>
 
           <div v-else-if="!results" class="empty-state">
@@ -145,7 +152,7 @@
 
             <div v-show="activeTab === 'mindmap'" class="mindmap-content">
               <div class="mindmap-box">
-                <MindMapRenderer :content="renderedMindmapContent" />
+                <MindMapRenderer :content="renderedMindmapContent" @node-edit="handleMindmapNodeEdit" />
               </div>
             </div>
           </div>
@@ -207,20 +214,25 @@ import { ElMessage } from 'element-plus'
 import ConfigPanel from '@/components/ConfigPanel.vue'
 import MarkdownRenderer from '@/components/MarkdownRenderer.vue'
 import MindMapRenderer from '@/components/MindMapRenderer.vue'
-import { autoPromoteParagraphsToSubheading, useDocumentProcessor } from '@/composables/useDocumentProcessor'
+import { useDocumentProcessor } from '@/composables/useDocumentProcessor'
 import { markdownToAstString } from '@/utils/markdownAst'
+import { buildMindmapMarkdown, replaceFirstMindmapText } from '@/utils/mindmapMarkdown'
 import { createEmptyReplacementRule, renderMarkdownTemplate, type ReplacementRule } from '@/utils/markdownTemplate'
 
 const {
   uploadedFiles,
   config,
   results,
+  isUploading,
   isProcessing,
+  processingStage,
+  error,
   backendOptions,
   languageOptions,
   clearAll,
   initializeManualResult,
-  handleFileUpload
+  handleFileUpload,
+  processDocument
 } = useDocumentProcessor()
 
 const showSettings = ref(false)
@@ -239,7 +251,7 @@ const draftReplacementRules = ref<ReplacementRule[]>([])
 const manualMarkdownContent = computed(() => results.value?.source || '')
 const templateRenderResult = computed(() => renderMarkdownTemplate(manualMarkdownContent.value, replacementRules.value))
 const renderedMarkdownContent = computed(() => templateRenderResult.value.markdown)
-const renderedMindmapContent = computed(() => autoPromoteParagraphsToSubheading(renderedMarkdownContent.value))
+const renderedMindmapContent = computed(() => buildMindmapMarkdown(renderedMarkdownContent.value))
 const templateRenderError = computed(() => templateRenderResult.value.error)
 const activeReplacementRuleCount = computed(() => replacementRules.value.filter((rule) => rule.search.trim()).length)
 const hasActiveReplacementRules = computed(() => activeReplacementRuleCount.value > 0)
@@ -322,6 +334,19 @@ const handleBackendChange = (backend: string) => {
   console.log('Backend changed to:', backend)
 }
 
+const handleProcessDocument = async () => {
+  await processDocument()
+  if (error.value) {
+    ElMessage.error(error.value)
+    return
+  }
+  if (results.value) {
+    activeTab.value = 'markdown'
+    sourceViewMode.value = 'markdown'
+    ElMessage.success('转换完成')
+  }
+}
+
 const handleMarkdownRenderModeChange = (command: 'markdown' | 'html' | 'pdf' | 'richtext') => {
   markdownRenderMode.value = command
   activeTab.value = 'markdown'
@@ -363,6 +388,18 @@ const saveReplacementRules = () => {
   ElMessage.success(replacementRules.value.length > 0 ? '替换规则已保存并生效' : '已清空替换规则')
 }
 
+const handleMindmapNodeEdit = ({ oldText, newText }: { oldText: string; newText: string }) => {
+  if (!results.value) return
+  const updated = replaceFirstMindmapText(results.value.source || results.value.markdown, oldText, newText)
+  if (updated === (results.value.source || results.value.markdown)) {
+    ElMessage.warning('未在 Markdown 中定位到该节点文本，可在源码区直接编辑')
+    return
+  }
+  results.value.source = updated
+  results.value.markdown = updated
+  ElMessage.success('节点已同步到 Markdown')
+}
+
 const triggerUpload = () => {
   fileInput.value?.click()
 }
@@ -539,6 +576,13 @@ onUnmounted(() => {
   text-align: left;
 }
 
+.upload-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  margin-top: 12px;
+}
+
 .drag-upload-area.collapsed .uploaded-files {
   margin-top: 0;
   width: 100%;