diff --git a/frontend/src/pages/Document/DocumentEditor.jsx b/frontend/src/pages/Document/DocumentEditor.jsx
index e5bae51..c6a8549 100644
--- a/frontend/src/pages/Document/DocumentEditor.jsx
+++ b/frontend/src/pages/Document/DocumentEditor.jsx
@@ -17,6 +17,7 @@ import {
   FileImageOutlined,
   FilePdfOutlined,
   FileTextOutlined,
+  UndoOutlined,
 } from '@ant-design/icons'
 import { Editor } from '@bytemd/react'
 import gfm from '@bytemd/plugin-gfm'
@@ -78,13 +79,19 @@ function DocumentEditor() {
       return
     }
     
-    // 简单的从路径获取文件名
-    const fileName = linkTarget.split('/').pop()
-    const linkText = `[${fileName}](${linkTarget})`
-    
     if (editorCtxRef.current && editorCtxRef.current.editor) {
-      editorCtxRef.current.editor.replaceSelection(linkText)
-      editorCtxRef.current.editor.focus()
+      const editor = editorCtxRef.current.editor
+      // 获取当前选中的文字
+      const selection = editor.getSelection()
+      
+      // 简单的从路径获取文件名作为备选
+      const fileName = linkTarget.split('/').pop()
+      // 如果没有选中文字，则使用文件名作为链接文字；否则保留原文字
+      const linkTitle = selection || fileName
+      const linkText = `[${linkTitle}](${linkTarget})`
+      
+      editor.replaceSelection(linkText)
+      editor.focus()
     }
     
     setLinkModalVisible(false)
@@ -191,11 +198,33 @@ function DocumentEditor() {
         setFileContent(res.data.content)
       } catch (error) {
         Toast.error('加载失败', '加载文件失败')
-      } finally {
-        setLoading(false)
-      }
+    } finally {
+      setLoading(false)
     }
   }
+  }
+
+  // 重置当前编辑内容（重新从服务器加载）
+  const handleReset = () => {
+    if (!selectedFile) return
+
+    Modal.confirm({
+      title: '确认重置',
+      content: '确定要重置当前修改吗？所有未保存的更改都将丢失。',
+      onOk: async () => {
+        setLoading(true)
+        try {
+          const res = await getFileContent(projectId, selectedFile)
+          setFileContent(res.data.content)
+          Toast.success('重置成功', '已恢复至最后保存的版本')
+        } catch (error) {
+          Toast.error('重置失败', '无法重新加载文件内容')
+        } finally {
+          setLoading(false)
+        }
+      },
+    })
+  }
 
   const handleSaveFile = async () => {
     if (!selectedFile) {
@@ -915,12 +944,11 @@ function DocumentEditor() {
                 保存
               </Button>
               <Button
-                danger
-                icon={<DeleteOutlined />}
-                onClick={handleDelete}
-                disabled={!selectedFile}
+                icon={<UndoOutlined />}
+                onClick={handleReset}
+                disabled={!selectedFile || loading}
               >
-                删除
+                重置
               </Button>
             </Space>
           </div>
diff --git a/frontend/src/pages/Document/DocumentPage.jsx b/frontend/src/pages/Document/DocumentPage.jsx
index 3322d72..301993c 100644
--- a/frontend/src/pages/Document/DocumentPage.jsx
+++ b/frontend/src/pages/Document/DocumentPage.jsx
@@ -249,21 +249,31 @@ function DocumentPage() {
       // 解码失败，使用原始值
     }
 
-    // 解析相对路径
-    const targetPath = resolveRelativePath(selectedFile, decodedHref)
+    // 解析路径
+    let targetPath
+    if (decodedHref.startsWith('.') || decodedHref.startsWith('..')) {
+      // 真正的相对路径，相对于当前文件
+      targetPath = resolveRelativePath(selectedFile, decodedHref)
+    } else {
+      // 项目内绝对路径（由编辑器生成），相对于项目根目录
+      targetPath = decodedHref.startsWith('/') ? decodedHref.substring(1) : decodedHref
+    }
 
     // 自动展开父目录
-    const parentPath = targetPath.substring(0, targetPath.lastIndexOf('/'))
-    if (parentPath && !openKeys.includes(parentPath)) {
-      // 收集所有父路径
-      const pathParts = parentPath.split('/')
-      const allParentPaths = []
-      let currentPath = ''
-      for (const part of pathParts) {
-        currentPath = currentPath ? `${currentPath}/${part}` : part
-        allParentPaths.push(currentPath)
+    const lastSlashIndex = targetPath.lastIndexOf('/')
+    if (lastSlashIndex !== -1) {
+      const parentPath = targetPath.substring(0, lastSlashIndex)
+      if (parentPath && !openKeys.includes(parentPath)) {
+        // 收集所有父路径
+        const pathParts = parentPath.split('/')
+        const allParentPaths = []
+        let currentPath = ''
+        for (const part of pathParts) {
+          currentPath = currentPath ? `${currentPath}/${part}` : part
+          allParentPaths.push(currentPath)
+        }
+        setOpenKeys([...new Set([...openKeys, ...allParentPaths])])
       }
-      setOpenKeys([...new Set([...openKeys, ...allParentPaths])])
     }
 
     // 选中文件并加载
@@ -590,15 +600,20 @@ function DocumentPage() {
                     remarkPlugins={[remarkGfm]}
                     rehypePlugins={[rehypeRaw, rehypeSlug, rehypeHighlight]}
                     components={{
-                      a: ({ node, href, children, ...props }) => (
-                        <a
-                          href={href}
-                          onClick={(e) => handleMarkdownLink(e, href)}
-                          {...props}
-                        >
-                          {children}
-                        </a>
-                      ),
+                      a: ({ node, href, children, ...props }) => {
+                        const isExternal = href && (href.startsWith('http') || href.startsWith('//'));
+                        return (
+                          <a
+                            href={href}
+                            onClick={(e) => handleMarkdownLink(e, href)}
+                            target={isExternal ? '_blank' : undefined}
+                            rel={isExternal ? 'noopener noreferrer' : undefined}
+                            {...props}
+                          >
+                            {children}
+                          </a>
+                        );
+                      },
                     }}
                   >
                     {markdownContent}