diff --git a/frontend/src/pages/Document/DocumentEditor.jsx b/frontend/src/pages/Document/DocumentEditor.jsx
index 6321324..e5cbfb2 100644
--- a/frontend/src/pages/Document/DocumentEditor.jsx
+++ b/frontend/src/pages/Document/DocumentEditor.jsx
@@ -4,6 +4,7 @@ import { Layout, Menu, Button, Modal, Input, Space, Tooltip, Dropdown, Upload, S
 import {
   FileOutlined,
   FolderOutlined,
+  FolderOpenOutlined,
   PlusOutlined,
   DeleteOutlined,
   EditOutlined,
@@ -923,11 +924,15 @@ function DocumentEditor() {
       )
 
       if (!node.isLeaf) {
+        const isOpen = openKeys.includes(node.key)
+        const folderIconStyle = isSelected ? { color: '#1890ff' } : undefined
         // 目录 - 通过className和style控制选中样式
         return {
           key: node.key,
           label: labelContent,
-          icon: <FolderOutlined style={isSelected ? { color: '#1890ff' } : {}} />,
+          icon: isOpen
+            ? <FolderOpenOutlined style={folderIconStyle} />
+            : <FolderOutlined style={folderIconStyle} />,
           children: node.children ? convertTreeToMenuItems(node.children) : [],
           className: isSelected ? 'folder-selected' : '',
           onTitleClick: () => {
diff --git a/frontend/src/pages/Document/DocumentPage.jsx b/frontend/src/pages/Document/DocumentPage.jsx
index fdcb3cb..af1f4d8 100644
--- a/frontend/src/pages/Document/DocumentPage.jsx
+++ b/frontend/src/pages/Document/DocumentPage.jsx
@@ -1,7 +1,7 @@
 import { useState, useEffect, useRef, useMemo } from 'react'
 import { useParams, useNavigate, useSearchParams } from 'react-router-dom'
 import { Layout, Menu, Spin, FloatButton, Button, Tooltip, message, Anchor, Modal, Input, Space, Dropdown, Empty, Switch } from 'antd'
-import { VerticalAlignTopOutlined, ShareAltOutlined, MenuFoldOutlined, MenuUnfoldOutlined, FileTextOutlined, FolderOutlined, FilePdfOutlined, CopyOutlined, LockOutlined, CloudDownloadOutlined, CloudUploadOutlined, DownOutlined, SearchOutlined, ArrowLeftOutlined, MenuOutlined, ReloadOutlined } from '@ant-design/icons'
+import { VerticalAlignTopOutlined, ShareAltOutlined, MenuFoldOutlined, MenuUnfoldOutlined, FileTextOutlined, FolderOutlined, FolderOpenOutlined, FilePdfOutlined, CopyOutlined, LockOutlined, CloudDownloadOutlined, CloudUploadOutlined, DownOutlined, SearchOutlined, ArrowLeftOutlined, MenuOutlined, ReloadOutlined } from '@ant-design/icons'
 import ReactMarkdown from 'react-markdown'
 import remarkGfm from 'remark-gfm'
 import rehypeRaw from 'rehype-raw'
@@ -306,11 +306,12 @@ function DocumentPage() {
       )
 
       if (!node.isLeaf) {
+        const isOpen = openKeys.includes(node.key)
         // 目录
         return {
           key: node.key,
           label: labelNode,
-          icon: <FolderOutlined />,
+          icon: isOpen ? <FolderOpenOutlined /> : <FolderOutlined />,
           onTitleClick: () => setSelectedNodeKey(node.key),
           children: node.children ? convertTreeToMenuItems(node.children) : [],
         }
diff --git a/frontend/src/pages/Preview/ProjectSharePage.jsx b/frontend/src/pages/Preview/ProjectSharePage.jsx
index 9d7cc94..8c56a05 100644
--- a/frontend/src/pages/Preview/ProjectSharePage.jsx
+++ b/frontend/src/pages/Preview/ProjectSharePage.jsx
@@ -1,7 +1,7 @@
 import { useState, useEffect, useRef, useMemo } from 'react'
 import { useParams, useSearchParams, useNavigate } from 'react-router-dom'
 import { Layout, Menu, Spin, Button, Modal, Input, Drawer, Anchor, Empty, Tooltip } from 'antd'
-import { MenuFoldOutlined, MenuUnfoldOutlined, FileTextOutlined, FolderOutlined, FilePdfOutlined, LockOutlined, MenuOutlined, CloseOutlined } from '@ant-design/icons'
+import { MenuFoldOutlined, MenuUnfoldOutlined, FileTextOutlined, FolderOutlined, FolderOpenOutlined, FilePdfOutlined, LockOutlined, MenuOutlined, CloseOutlined } from '@ant-design/icons'
 import ReactMarkdown from 'react-markdown'
 import remarkGfm from 'remark-gfm'
 import rehypeHighlight from 'rehype-highlight'
@@ -45,6 +45,7 @@ function ProjectSharePage() {
   const [projectInfo, setProjectInfo] = useState(null)
   const [fileTree, setFileTree] = useState([])
   const [selectedFile, setSelectedFile] = useState('')
+  const [selectedNodeKey, setSelectedNodeKey] = useState('')
   const [markdownContent, setMarkdownContent] = useState('')
   const [loading, setLoading] = useState(false)
   const [openKeys, setOpenKeys] = useState([])
@@ -264,10 +265,12 @@ function ProjectSharePage() {
         </Tooltip>
       )
       if (!node.isLeaf) {
+        const isOpen = openKeys.includes(node.key)
         return {
           key: node.key,
           label: labelNode,
-          icon: <FolderOutlined />,
+          icon: isOpen ? <FolderOpenOutlined /> : <FolderOutlined />,
+          onTitleClick: () => setSelectedNodeKey(node.key),
           children: node.children ? convertTreeToMenuItems(node.children) : [],
         }
       }
@@ -296,6 +299,7 @@ function ProjectSharePage() {
 
   const openSharedFile = (key) => {
     setSelectedFile(key)
+    setSelectedNodeKey(key)
 
     const parts = key.split('/')
     const allParentPaths = []
@@ -346,7 +350,10 @@ function ProjectSharePage() {
     window.open(exportProjectSharePDF(shareCode, selectedFile), '_blank')
   }
 
-  const menuItems = useMemo(() => convertTreeToMenuItems(filteredTreeData), [filteredTreeData])
+  const menuItems = useMemo(
+    () => convertTreeToMenuItems(filteredTreeData),
+    [filteredTreeData, openKeys]
+  )
 
   return (
     <div className="preview-page">
@@ -391,7 +398,7 @@ function ProjectSharePage() {
               {menuItems.length > 0 ? (
                 <Menu
                   mode="inline"
-                  selectedKeys={[selectedFile]}
+                  selectedKeys={selectedNodeKey ? [selectedNodeKey] : []}
                   openKeys={openKeys}
                   onOpenChange={setOpenKeys}
                   items={menuItems}
@@ -426,7 +433,7 @@ function ProjectSharePage() {
             {menuItems.length > 0 ? (
               <Menu
                 mode="inline"
-                selectedKeys={[selectedFile]}
+                selectedKeys={selectedNodeKey ? [selectedNodeKey] : []}
                 openKeys={openKeys}
                 onOpenChange={setOpenKeys}
                 items={menuItems}
diff --git a/frontend/src/pages/ProjectList/ProjectList.jsx b/frontend/src/pages/ProjectList/ProjectList.jsx
index 3fa1aaa..5740a93 100644
--- a/frontend/src/pages/ProjectList/ProjectList.jsx
+++ b/frontend/src/pages/ProjectList/ProjectList.jsx
@@ -1,7 +1,7 @@
 import { useState, useEffect } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { Card, Empty, Modal, Form, Input, Row, Col, Space, Button, Switch, message, Select, Table, Tag, Pagination } from 'antd'
-import { PlusOutlined, FolderOutlined, TeamOutlined, EyeOutlined, CopyOutlined, DeleteOutlined, EditOutlined, FileOutlined, GithubOutlined, CheckOutlined, SwapOutlined } from '@ant-design/icons'
+import { PlusOutlined, FolderOutlined, TeamOutlined, EyeOutlined, CopyOutlined, DeleteOutlined, EditOutlined, FileOutlined, GithubOutlined, CheckOutlined, SwapOutlined, SettingOutlined } from '@ant-design/icons'
 import { getMyProjects, getOwnedProjects, getSharedProjects, createProject, deleteProject, updateProject, getProjectMembers, addProjectMember, removeProjectMember, getGitRepos, createGitRepo, updateGitRepo, deleteGitRepo, transferProject } from '@/api/project'
 import { getProjectShareInfo, updateProjectShareSettings } from '@/api/share'
 import { getUserList } from '@/api/users'
@@ -599,7 +599,7 @@ function ProjectList({ type = 'my' }) {
                   className="project-card"
                   onClick={() => handleOpenProject(project.id)}
                   actions={type === 'my' ? [
-                    <EditOutlined key="edit" onClick={(e) => handleEdit(e, project)} />,
+                    <SettingOutlined key="settings" onClick={(e) => handleEdit(e, project)} />,
                     <GithubOutlined key="git" onClick={(e) => handleGitSettings(e, project)} />,
                     <TeamOutlined key="members" onClick={(e) => handleMembers(e, project)} />,
                   ] : [