diff --git a/apps/desktop/src/main/index.ts b/apps/desktop/src/main/index.ts
index d9a34a6..69743bf 100644
--- a/apps/desktop/src/main/index.ts
+++ b/apps/desktop/src/main/index.ts
@@ -1,5 +1,5 @@
 // main 进程入口：创建窗口 + 初始化库 + 注册 IPC + 迁移检测
-import { app, BrowserWindow, ipcMain, protocol, net, dialog } from 'electron';
+import { app, BrowserWindow, ipcMain, protocol, net, dialog, shell } from 'electron';
 import nodePath from 'node:path';
 import { fileURLToPath, pathToFileURL } from 'node:url';
 import { promises as fs } from 'node:fs';
@@ -31,6 +31,19 @@ function createWindow() {
   });
   if (!win) win = w;
   w.on('ready-to-show', () => w.show());
+  // 安全：外部链接一律交给系统默认浏览器，不在应用窗口内导航（避免丢失编辑器状态）
+  w.webContents.setWindowOpenHandler(({ url }) => {
+    if (/^https?:\/\//i.test(url)) void shell.openExternal(url);
+    return { action: 'deny' };
+  });
+  w.webContents.on('will-navigate', (e, url) => {
+    const current = w.webContents.getURL();
+    // 仅拦截跳转到其它 http(s) 站点的导航；应用自身 (vaultasset/file/app) 不拦
+    if (/^https?:\/\//i.test(url) && url !== current) {
+      e.preventDefault();
+      void shell.openExternal(url);
+    }
+  });
   // 转发渲染进程控制台消息到主进程终端（便于开发调试）
   w.webContents.on('console-message', (e, level, message, line, sourceId) => {
     const lv = ['log', 'info', 'warn', 'error'][level] || 'log';
diff --git a/apps/desktop/src/main/ipc/handlers.ts b/apps/desktop/src/main/ipc/handlers.ts
index 2652a28..f5ff419 100644
--- a/apps/desktop/src/main/ipc/handlers.ts
+++ b/apps/desktop/src/main/ipc/handlers.ts
@@ -93,4 +93,13 @@ export function registerIpc(vault: VaultService) {
     if (!fs2) return;
     shell.showItemInFolder(nodePath.join(fs2.getRoot(), p.path));
   });
+
+  // 超链接用系统默认浏览器打开（不用 Electron 内置窗口）
+  ipcMain.handle(IPC.openExternal, async (_e, p: { url: string }) => {
+    const url = p?.url?.trim();
+    if (!url) return;
+    // 仅允许 http/https，防止把本地协议或 file: 路径交给外部程序
+    if (!/^https?:\/\//i.test(url)) return;
+    await shell.openExternal(url);
+  });
 }
\ No newline at end of file
diff --git a/apps/desktop/src/renderer/features/editor/LinkBubbleMenu.tsx b/apps/desktop/src/renderer/features/editor/LinkBubbleMenu.tsx
index fef287a..7c5b985 100644
--- a/apps/desktop/src/renderer/features/editor/LinkBubbleMenu.tsx
+++ b/apps/desktop/src/renderer/features/editor/LinkBubbleMenu.tsx
@@ -16,7 +16,9 @@ export function LinkBubbleMenu({ editor }: { editor: Editor }) {
   const apply = () => { const u = href.trim(); if (u) editor.chain().focus().extendMarkRange('link').setLink({ href: u }).run(); };
   const remove = () => editor.chain().focus().extendMarkRange('link').unsetLink().run();
   return (
-    <BubbleMenu editor={editor} shouldShow={({ editor }) => editor.isActive('link')} className="link-bubble"
+    <BubbleMenu editor={editor} shouldShow={({ editor, state }) =>
+      // 只在「选中了链接文字」时才弹出，避免光标停在链接上就弹气泡打断编辑
+      editor.isActive('link') && !state.selection.empty} className="link-bubble"
       style={{ display: 'flex', gap: 4, alignItems: 'center', background: 'var(--bg-secondary)', border: '1px solid var(--control-border)', borderRadius: 6, padding: 4, boxShadow: '0 4px 16px rgba(0,0,0,0.4)' }}>
       <input value={href} onChange={e => setHref(e.target.value)} onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); apply(); } }}
         placeholder="链接地址" style={{ width: 180, background: 'var(--bg-secondary)', border: '1px solid var(--control-border)', color: 'var(--text-primary)', borderRadius: 4, padding: '3px 8px', fontSize: 13, outline: 'none' }} />
diff --git a/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx b/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
index c1a11bd..de65990 100644
--- a/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
+++ b/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
@@ -141,6 +141,19 @@ export function TiptapEditor() {
         }
         return false;
       },
+      // 点击超链接 → 用系统默认浏览器打开（openOnClick 关闭，手动接管）
+      handleClick: (view, _pos, event) => {
+        const target = (event.target as HTMLElement | null)?.closest?.('a[href]');
+        if (!target) return false;
+        const href = (target as HTMLAnchorElement).getAttribute('href') ?? '';
+        // 仅接管纯单击（不含 Ctrl/Cmd/Shift/Alt），避免影响文字选取编辑
+        if (/^https?:\/\//i.test(href) && !event.ctrlKey && !event.metaKey && !event.shiftKey && !event.altKey) {
+          event.preventDefault();
+          void invoke(IPC.openExternal, { url: href });
+          return true;
+        }
+        return false;
+      },
     },
     onUpdate: ({ editor }) => {
       if (skipUpdate.current) return;
@@ -166,6 +179,12 @@ export function TiptapEditor() {
     skipUpdate.current = true;
     editor.commands.setContent(body || '', { emitUpdate: false });
     skipUpdate.current = false;
+    // 切到新文档时回到顶部（编辑器实例复用，滚动容器不随文档重建，需手动复位）
+    const scroller = editor.view.dom.parentElement as HTMLElement | null;
+    if (scroller) {
+      // 内容换入后再复位，确保 scrollTop 真正落到顶部
+      requestAnimationFrame(() => { scroller.scrollTop = 0; });
+    }
   }, [currentPath, editor]);
 
   // FR-E13：长文档底部书写——光标行距编辑区底部保持留白，避免输入内容贴着页面底缘
diff --git a/apps/desktop/tests/e2e/editor-link-image.spec.ts b/apps/desktop/tests/e2e/editor-link-image.spec.ts
index 5f6caf9..69efab4 100644
--- a/apps/desktop/tests/e2e/editor-link-image.spec.ts
+++ b/apps/desktop/tests/e2e/editor-link-image.spec.ts
@@ -46,7 +46,9 @@ test('FR-E6：链接气泡编辑（添加+移除）', async () => {
   let html: string = await a.page.evaluate(() => document.querySelector('.ProseMirror')?.innerHTML ?? '');
   expect(html).toContain('href="https://example.com"');
 
+  // 气泡只在「选中链接文字」时弹出（纯点击链接改为调用系统浏览器打开）
   await a.page.locator('.ProseMirror a').click();
+  await a.page.keyboard.press('Control+A');
   await expect(a.page.locator('.link-bubble')).toBeVisible({ timeout: 5000 });
   await expect(a.page.locator('.link-bubble input')).toHaveValue('https://example.com');
 
diff --git a/packages/shared/src/types/ipc.ts b/packages/shared/src/types/ipc.ts
index 6c0120a..82aeeb9 100644
--- a/packages/shared/src/types/ipc.ts
+++ b/packages/shared/src/types/ipc.ts
@@ -43,6 +43,7 @@ export const IPC = {
   appearanceSave: 'appearance:save',
   keymapLoad: 'keymap:load',
   keymapSave: 'keymap:save',
+  openExternal: 'open:external',
 } as const;
 export type IpcChannel = (typeof IPC)[keyof typeof IPC];
 
@@ -86,6 +87,7 @@ export interface IpcMap {
   [IPC.appearanceSave]: { args: { themeId: string; params: Record<string, unknown>; effect: string; bgImage: string | null }; result: void };
   [IPC.keymapLoad]: { args: void; result: { id: string; combo: string }[] | null };
   [IPC.keymapSave]: { args: { id: string; combo: string }[]; result: void };
+  [IPC.openExternal]: { args: { url: string }; result: void };
 }
 
 // 类型安全的 invoke 帮助器签名（preload 暴露 + 渲染层使用）