diff --git a/src/components/pages/HierarchyAnalysisResult.vue b/src/components/pages/HierarchyAnalysisResult.vue
index 91073fd..eddfb10 100644
--- a/src/components/pages/HierarchyAnalysisResult.vue
+++ b/src/components/pages/HierarchyAnalysisResult.vue
@@ -49,7 +49,7 @@
                   <i class="fas fa-cubes"></i>
                 </div>
                 <div class="card-content">
-                  <div class="card-value">{{ hierarchyData.length }}</div>
+                  <div class="card-value">{{ (analysisResults?.total_components || 0) - 1 }}</div>
                   <div class="card-label">总组件数</div>
                 </div>
               </div>
@@ -74,8 +74,8 @@
               </div>
               <div class="tree-container">
                 <div
-                  v-for="component in sortedHierarchyData"
-                  :key="component.id"
+                  v-for="(component, index) in hierarchyData"
+                  :key="index"
                   v-show="shouldShowNode(component)"
                   class="tree-node"
                   :class="`safety-${component.deletion_safety}`"
@@ -84,11 +84,11 @@
                     <div
                       class="node-toggle"
                       :class="{
-                        expanded: expandedNodes.has(component.id),
-                        'has-children': hasChildren(component.id)
+                        expanded: component.expanded,
+                        'has-children': hasChildren(component)
                       }"
-                      @click="toggleNode(component)"
-                      v-if="hasChildren(component.id)"
+                      @click="toggleNode(component, index)"
+                      v-if="hasChildren(component)"
                     >
                       <i class="fas fa-chevron-right"></i>
                     </div>
@@ -97,7 +97,7 @@
                       <i class="fas fa-cube"></i>
                     </div>
                     <div class="node-content">
-                      <div class="node-name">{{ component.id }}</div>
+                      <div class="node-name">{{ component.filename }}</div>
                       <div class="node-info">
                         <span class="node-type">{{ component.type }}</span>
                         <span class="node-level">层级: {{ component.level }}</span>
@@ -105,8 +105,7 @@
                       </div>
                     </div>
                     <div class="node-actions">
-                      <span class="node-size">{{ component.file_size }}</span>
-                      <button class="node-select-btn" :class="{ selected: selectedComponents.has(component.id) }" @click="toggleSelection(component.id)">
+                      <button class="node-select-btn" :class="{ selected: selectedComponents.has(component.path) }" @click="toggleSelection(component.path)">
                         <i class="fas fa-check"></i>
                       </button>
                     </div>
@@ -129,19 +128,18 @@
                       <th>类型</th>
                       <th>层级</th>
                       <th>路径</th>
-                      <th>文件大小</th>
                       <th>删除安全性</th>
                     </tr>
                   </thead>
                   <tbody>
-                    <tr v-for="component in hierarchyData" :key="component.id" class="component-row" :class="`safety-${component.deletion_safety}`">
+                    <tr v-for="(component, index) in hierarchyData" :key="index" class="component-row" :class="`safety-${component.deletion_safety}`">
                       <td>
-                        <input type="checkbox" :checked="selectedComponents.has(component.id)" @change="toggleSelection(component.id)">
+                        <input type="checkbox" :checked="selectedComponents.has(component.path)" @change="toggleSelection(component.path)">
                       </td>
                       <td>
                         <div class="component-name">
                           <i class="fas fa-cube"></i>
-                          {{ component.name }}
+                          {{ component.filename }}
                         </div>
                       </td>
                       <td>{{ component.type }}</td>
@@ -149,7 +147,6 @@
                       <td>
                         <div class="component-path">{{ component.path }}</div>
                       </td>
-                      <td>{{ component.file_size }}</td>
                       <td>
                         <span class="safety-badge" :class="`safety-${component.deletion_safety}`">
                           {{ getSafetyLabel(component.deletion_safety) }}
@@ -190,7 +187,7 @@
 </template>
 
 <script setup>
-import { ref, computed } from 'vue'
+import { ref, computed, onMounted, watch } from 'vue'
 import { creoApi } from '@/services/creoApi'
 import { ElMessageBox } from 'element-plus'
 
@@ -205,7 +202,7 @@ const emit = defineEmits(['show-hierarchy-deletion-params'])
 
 const currentView = ref('tree')
 const selectedComponents = ref(new Set())
-const expandedNodes = ref(new Set())
+const hierarchyData = ref([]) // 直接存储所有组件数据
 
 // 直接使用API数据，照抄ShellAnalysisResult的方式
 const analysisResults = computed(() => {
@@ -215,8 +212,8 @@ const analysisResults = computed(() => {
   return props.analysisData.data
 })
 
-// 从API数据中提取层级数据
-const hierarchyData = computed(() => {
+// 初始化层级数据
+const initializeHierarchyData = () => {
   const allData = []
 
   if (analysisResults.value) {
@@ -229,7 +226,8 @@ const hierarchyData = computed(() => {
           level.components.forEach(component => {
             allData.push({
               ...component,
-              deletion_safety: component.deletion_safety || 'safe'
+              deletion_safety: component.deletion_safety || 'safe',
+              expanded: false // 添加展开状态
             })
           })
         }
@@ -243,8 +241,12 @@ const hierarchyData = computed(() => {
       if (recommendations.safe_deletions && Array.isArray(recommendations.safe_deletions)) {
         recommendations.safe_deletions.forEach(comp => {
           // 避免重复添加已存在的组件
-          if (!allData.find(existing => existing.id === comp.id)) {
-            allData.push({ ...comp, deletion_safety: 'safe' })
+          if (!allData.find(existing => existing.path === comp.path && existing.id === comp.id)) {
+            allData.push({
+              ...comp,
+              deletion_safety: 'safe',
+              expanded: false
+            })
           }
         })
       }
@@ -252,16 +254,20 @@ const hierarchyData = computed(() => {
       if (recommendations.risky_deletions && Array.isArray(recommendations.risky_deletions)) {
         recommendations.risky_deletions.forEach(comp => {
           // 避免重复添加已存在的组件
-          if (!allData.find(existing => existing.id === comp.id)) {
-            allData.push({ ...comp, deletion_safety: 'risky' })
+          if (!allData.find(existing => existing.path === comp.path && existing.id === comp.id)) {
+            allData.push({
+              ...comp,
+              deletion_safety: 'risky',
+              expanded: false
+            })
           }
         })
       }
     }
   }
 
-  return allData
-})
+  hierarchyData.value = allData
+}
 
 
 
@@ -292,59 +298,66 @@ const getParentId = (component) => {
   return null
 }
 
-// 对组件按路径排序（路径自然包含了层级关系）
-const sortedHierarchyData = computed(() => {
-  return [...hierarchyData.value].sort((a, b) => {
-    // 直接按路径排序，这样父子组件会自然相邻
-    const pathA = a.path || a.id || ''
-    const pathB = b.path || b.id || ''
-    return pathA.localeCompare(pathB)
-  })
-})
+// 由于现在直接操作数组顺序，不再需要排序
 
 // 判断节点是否有子节点
-const hasChildren = (nodeId) => {
-  return hierarchyData.value.some(comp => getParentId(comp) === nodeId)
+const hasChildren = (component) => {
+  return component.children_count > 0
 }
 
-// 检查节点是否应该显示（所有祖先节点都已展开）
+// 由于现在直接管理数组顺序，所有在数组中的组件都应该显示
 const shouldShowNode = (component) => {
-  // 根节点始终显示
-  if (component.level === 0) return true
-
-  // 检查所有祖先节点是否都已展开
-  let current = component
-  while (current && current.level > 0) {
-    const parentId = getParentId(current)
-    if (!parentId) return false // 找不到父节点
-
-    // 如果父节点没有展开，则不显示
-    if (!expandedNodes.value.has(parentId)) return false
-
-    // 继续向上查找
-    current = hierarchyData.value.find(c => c.id === parentId)
-  }
-
   return true
 }
 
-const toggleNode = (component) => {
-  const nodeId = component.id
-
-  if (expandedNodes.value.has(nodeId)) {
-    // 收起节点
-    expandedNodes.value.delete(nodeId)
+const toggleNode = async (component, index) => {
+  if (component.expanded) {
+    // 收起节点：移除子组件
+    component.expanded = false
+    // 找到所有子组件并移除
+    let removeCount = 0
+    for (let i = index + 1; i < hierarchyData.value.length; i++) {
+      const nextComponent = hierarchyData.value[i]
+      if (nextComponent.level > component.level) {
+        removeCount++
+      } else {
+        break
+      }
+    }
+    if (removeCount > 0) {
+      hierarchyData.value.splice(index + 1, removeCount)
+    }
   } else {
-    // 展开节点
-    expandedNodes.value.add(nodeId)
+    // 展开节点：加载并插入子组件
+    if (component.children_count > 0) {
+      try {
+        const componentId = component.level === 0 ? null : component.id
+        const result = await creoApi.getChildrenComponents(component.path, componentId)
+        if (result.success && result.data.data.children) {
+          // 处理子组件数据
+          const processedChildren = result.data.data.children.map(child => ({
+            ...child,
+            level: component.level + 1,  // 使用父组件level + 1
+            parent_id: component.id,
+            deletion_safety: child.deletion_safety || 'safe',
+            expanded: false
+          }))
+          // 在当前组件后插入子组件
+          hierarchyData.value.splice(index + 1, 0, ...processedChildren)
+          component.expanded = true
+        }
+      } catch (error) {
+        console.error('加载子组件失败:', error)
+      }
+    }
   }
 }
 
-const toggleSelection = (componentId) => {
-  if (selectedComponents.value.has(componentId)) {
-    selectedComponents.value.delete(componentId)
+const toggleSelection = (componentPath) => {
+  if (selectedComponents.value.has(componentPath)) {
+    selectedComponents.value.delete(componentPath)
   } else {
-    selectedComponents.value.add(componentId)
+    selectedComponents.value.add(componentPath)
   }
 }
 
@@ -384,10 +397,8 @@ const deleteSelectedComponents = async () => {
     }
   )
 
-  // 收集选中组件的路径
+  // 收集选中组件的路径（selectedComponents已经存储的是路径）
   const componentPaths = Array.from(selectedComponents.value)
-    .map(id => hierarchyData.value.find(c => c.id === id)?.path)
-    .filter(Boolean)
 
   // 调用现有API删除组件（通知由apiClient钩子自动处理）
   const result = await creoApi.deleteComponentsByPath(componentPaths)
@@ -396,6 +407,16 @@ const deleteSelectedComponents = async () => {
     selectedComponents.value.clear()
   }
 }
+
+// 初始化数据
+onMounted(() => {
+  initializeHierarchyData()
+})
+
+// 监听props变化
+watch(() => props.analysisData, () => {
+  initializeHierarchyData()
+}, { deep: true })
 </script>
 
 <style scoped>
diff --git a/src/config/cad.js b/src/config/cad.js
index 277efad..65fffea 100644
--- a/src/config/cad.js
+++ b/src/config/cad.js
@@ -89,6 +89,7 @@ const CAD_SOFTWARE_DEFINITIONS = {
       shellAnalysis: '/api/analysis/shell-analysis',
       optimization: '/api/creo/shrinkwrap/shell',
       deleteComponent: '/api/creo/component/delete-by-path',
+      componentChildren: '/api/creo/component/children',
       export: '/api/export/model'
     }
   },
diff --git a/src/services/creoApi.js b/src/services/creoApi.js
index c2587d4..34926b7 100644
--- a/src/services/creoApi.js
+++ b/src/services/creoApi.js
@@ -99,7 +99,8 @@ class CreoApiService {
       "software_type": SOFTWARE_TYPE,
       "project_name": "overall_top_design.asm",
       "max_depth": DEFAULT_MAX_RESULTS,
-      "include_geometry": true
+      "include_geometry": true,
+      "target_level": 0
     }, {
       operationContext: {
         software: 'Creo',
@@ -241,6 +242,36 @@ class CreoApiService {
       }
     })
   }
+
+  /**
+   * 获取指定组件的子组件
+   * @param {string} componentPath - 组件路径
+   * @param {number} componentId - 组件ID (Creo Feature ID)
+   * @returns {Promise<{success: boolean, data?: any, error?: string}>}
+   */
+  async getChildrenComponents(componentPath, componentId = null) {
+    if (!componentPath) {
+      throw new Error('组件路径不能为空')
+    }
+
+    const url = buildApiUrl(this.softwareName, 'componentChildren')
+
+    const requestData = {
+      "component_path": componentPath
+    }
+
+    // 只有当componentId存在时才添加到请求中
+    if (componentId) {
+      requestData.component_id = componentId
+    }
+
+    return await apiClient.post(url, requestData, {
+      operationContext: {
+        software: 'Creo',
+        operation: '获取子组件'
+      }
+    })
+  }
 }
 
 // 导出单例实例