diff --git a/apps/desktop/src/renderer/features/editor/CodeBlockView.tsx b/apps/desktop/src/renderer/features/editor/CodeBlockView.tsx
index f617497..50de0d5 100644
--- a/apps/desktop/src/renderer/features/editor/CodeBlockView.tsx
+++ b/apps/desktop/src/renderer/features/editor/CodeBlockView.tsx
@@ -30,20 +30,18 @@ export function CodeBlockView({ node, updateAttributes, selected }: NodeViewProp
   const language = (node.attrs.language as string) || '';
   const codeClass = language ? `language-${language} hljs` : 'hljs';
   const [copied, setCopied] = useState(false);
-  // FR-E5 扩展：复制时携带 Markdown 代码围栏（```language），方便粘贴到其他 Markdown 应用
-  const copyWithFence = async () => {
+  // 复制按钮：复制纯代码内容（不带 Markdown 围栏）
+  const copyPlain = async () => {
     const code = node.textContent ?? '';
-    const lang = language && language !== 'plaintext' ? language : '';
-    const text = lang ? '```' + lang + '\n' + code + '\n```' : '```\n' + code + '\n```';
     try {
-      await navigator.clipboard.writeText(text);
+      await navigator.clipboard.writeText(code);
       setCopied(true);
       setTimeout(() => setCopied(false), 1500);
     } catch {
       // 剪贴板不可用时回退到 execCommand
       try {
         const ta = document.createElement('textarea');
-        ta.value = text;
+        ta.value = code;
         ta.style.position = 'fixed';
         ta.style.opacity = '0';
         document.body.appendChild(ta);
@@ -59,8 +57,8 @@ export function CodeBlockView({ node, updateAttributes, selected }: NodeViewProp
     <NodeViewWrapper as="div" style={{ background: 'var(--bg-secondary)', borderRadius: 6, margin: '0.6em 0', overflow: 'hidden', outline: selected ? '1px solid #4a6a8a' : 'none' }}>
       <div contentEditable={false} style={{ display: 'flex', justifyContent: 'flex-end', alignItems: 'center', gap: 8, padding: '4px 8px', borderBottom: '1px solid var(--control-border)' }}>
         <button
-          onClick={() => void copyWithFence()}
-          title="复制（携带 Markdown 代码围栏 ```language）"
+          onClick={() => void copyPlain()}
+          title="复制（纯代码内容）"
           style={{ border: 'none', background: 'transparent', color: copied ? 'var(--accent-text)' : 'var(--text-tertiary)', cursor: 'pointer', fontSize: 12, padding: '1px 4px', borderRadius: 4 }}
           onMouseEnter={e => { if (!copied) e.currentTarget.style.background = 'var(--control-border)'; }}
           onMouseLeave={e => { e.currentTarget.style.background = 'transparent'; }}
diff --git a/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx b/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
index 4d4783c..d638116 100644
--- a/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
+++ b/apps/desktop/src/renderer/features/editor/TiptapEditor.tsx
@@ -59,7 +59,7 @@ export function TiptapEditor() {
       Link.configure({ openOnClick: false }),
       Img,
       Placeholder.configure({ placeholder: '开始写作…' }),
-      Markdown.configure({ html: false, breaks: false, linkify: true, transformPastedText: true, transformCopiedText: true }),
+      Markdown.configure({ html: false, breaks: false, linkify: true, transformPastedText: true, transformCopiedText: false }),
       BlockOps,
       FindReplaceHighlight,
       MathBlock,
@@ -71,6 +71,29 @@ export function TiptapEditor() {
     editorProps: {
       // 关闭 Chromium 内置拼写检查——contenteditable 默认开启，会对英文技术词画红色波浪线
       attributes: { spellcheck: 'false' },
+      // 代码块内复制：只复制纯代码内容，不附带 ``` 围栏（tiptap-markdown 默认会序列化出围栏）
+      handleDOMEvents: {
+        copy: (view, event) => {
+          const { selection, doc } = view.state;
+          if (selection.empty) return false;
+          // 判断选区是否完全落在某个代码块内容内（含 from=0 选中整块的情况）
+          let inCode = false;
+          doc.descendants((node, pos) => {
+            if (node.type.name === 'codeBlock') {
+              const start = pos + 1;
+              const end = pos + node.nodeSize - 1;
+              if (selection.from >= start && selection.to <= end) { inCode = true; return false; }
+            }
+            return true;
+          });
+          if (!inCode) return false;
+          const text = doc.textBetween(selection.from, selection.to, '\n', ' ');
+          event.preventDefault();
+          // 异步写入覆盖剪贴板，确保拿到纯代码文本（不带 ``` 围栏）
+          navigator.clipboard.writeText(text).catch(() => {});
+          return true;
+        },
+      },
       // FR-E6：剪贴板粘贴图片 -> 入库 .attachments -> 插入相对路径
       handlePaste: (_view, event) => {
         const ev = event as ClipboardEvent;
diff --git a/apps/desktop/tests/e2e/codecopy-check.spec.ts b/apps/desktop/tests/e2e/codecopy-check.spec.ts
new file mode 100644
index 0000000..ab9f793
--- /dev/null
+++ b/apps/desktop/tests/e2e/codecopy-check.spec.ts
@@ -0,0 +1,64 @@
+import { test, expect } from '@playwright/test';
+import { _electron as electron } from 'playwright';
+import { promises as fs } from 'node:fs';
+import nodePath from 'node:path';
+import os from 'node:os';
+
+const MAIN_JS = nodePath.join(process.cwd(), 'dist-electron/main/index.js');
+
+async function launch(userData: string) {
+  const app = await electron.launch({ args: ['--user-data-dir=' + userData, MAIN_JS] });
+  const page = await app.firstWindow();
+  await page.waitForLoadState('domcontentloaded');
+  const invoke = (ch: string, args: any) => page.evaluate(({ ch, args }) => (globalThis as any).dsh.invoke(ch, args), { ch, args });
+  const clip = () => app.evaluate(({ clipboard }) => clipboard.readText());
+  return { app, page, invoke, clip };
+}
+
+async function openDocWithCode(a: any) {
+  await a.invoke('vault:switch', { root: a.v });
+  await a.page.getByRole('button', { name: /新建文档/ }).click();
+  await a.page.getByPlaceholder(/输入文档标题/).fill('CodeCopy');
+  await a.page.getByPlaceholder(/输入文档标题/).press('Enter');
+  await expect(a.page.getByTestId('tabbar').getByText('CodeCopy', { exact: true })).toBeVisible({ timeout: 10000 });
+  const ed = a.page.locator('.ProseMirror');
+  await ed.click();
+  await a.page.locator('button[title="代码块 Ctrl+Shift+K"]').click();
+  await a.page.keyboard.type('sudo apt-get update');
+}
+
+// 复制代码块内容不应附带 ``` 围栏
+test('代码块顶部“复制”按钮复制纯内容（无围栏）', async () => {
+  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-cc1-'));
+  const ud = nodePath.join(tmp, 'ud'); const v = nodePath.join(tmp, 'v');
+  await fs.mkdir(ud, { recursive: true }); await fs.mkdir(v, { recursive: true });
+  const a = await launch(ud);
+  a.v = v;
+  await openDocWithCode(a);
+  await a.page.locator('.ProseMirror button').filter({ hasText: /复制/ }).first().click();
+  await a.page.waitForTimeout(200);
+  const text = await a.clip();
+  console.log('CLIP_BUTTON', JSON.stringify(text));
+  expect(text.trim()).toBe('sudo apt-get update');
+  await a.app.close();
+});
+
+// Ctrl+C 选中代码块内容复制也不应带围栏
+test('代码块内 Ctrl+C 复制纯内容（无围栏）', async () => {
+  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-cc2-'));
+  const ud = nodePath.join(tmp, 'ud'); const v = nodePath.join(tmp, 'v');
+  await fs.mkdir(ud, { recursive: true }); await fs.mkdir(v, { recursive: true });
+  const a = await launch(ud);
+  a.v = v;
+  await openDocWithCode(a);
+  const code = a.page.locator('.ProseMirror pre code');
+  await code.click();
+  // 选中代码块内全部内容
+  await a.page.keyboard.press('Control+a');
+  await a.page.keyboard.press('Control+c');
+  await a.page.waitForTimeout(200);
+  const text = await a.clip();
+  console.log('CLIP_CTRLC', JSON.stringify(text));
+  expect(text.trim()).toBe('sudo apt-get update');
+  await a.app.close();
+});
\ No newline at end of file
diff --git a/apps/desktop/tests/e2e/fix-regression.spec.ts b/apps/desktop/tests/e2e/fix-regression.spec.ts
index b764bdf..adb469e 100644
--- a/apps/desktop/tests/e2e/fix-regression.spec.ts
+++ b/apps/desktop/tests/e2e/fix-regression.spec.ts
@@ -54,8 +54,8 @@ test('回归：文件列表缩进递进且带图标', async () => {
   await a.app.close();
 });
 
-// 回归：代码块复制携带 Markdown 围栏（FR-反馈3）
-test('回归：复制代码块携带 ```language 围栏', async () => {
+// 回归：代码块复制应为纯代码内容，不附带 ```language 围栏（用户反馈修正）
+test('回归：复制代码块为纯内容（无围栏）', async () => {
   const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-reg3-'));
   const userData = nodePath.join(tmp, 'ud'); const vault = nodePath.join(tmp, 'v');
   await fs.mkdir(userData, { recursive: true }); await fs.mkdir(vault, { recursive: true });
@@ -75,7 +75,8 @@ test('回归：复制代码块携带 ```language 围栏', async () => {
   await copyBtn.click();
   await a.page.waitForTimeout(400);
   const text = await a.page.evaluate(() => (globalThis as any).__cap?.[0] ?? null);
-  expect(text).toBe('```bash\necho hello\nls -la\n```');
+  // 纯代码内容，不带 ``` 围栏
+  expect(text).toBe('echo hello\nls -la');
   await a.app.close();
 });