diff --git a/src/renderer/others/setting-schema.ts b/src/renderer/others/setting-schema.ts
index fd4c2990..98fdfcc8 100644
--- a/src/renderer/others/setting-schema.ts
+++ b/src/renderer/others/setting-schema.ts
@@ -419,6 +419,14 @@ const schema: SettingSchema = ({
       group: 'render',
       required: true,
     },
+    'render.heading-number': {
+      defaultValue: false,
+      title: 'T_setting-panel.schema.render.heading-number',
+      type: 'boolean',
+      format: 'checkbox',
+      group: 'render',
+      required: true,
+    },
     'render.text-autospace': {
       defaultValue: false,
       title: 'T_setting-panel.schema.render.text-autospace',
diff --git a/src/renderer/plugins/__tests__/markdown-heading-number.ts b/src/renderer/plugins/__tests__/markdown-heading-number.ts
index b4f00734..3a9a284f 100644
--- a/src/renderer/plugins/__tests__/markdown-heading-number.ts
+++ b/src/renderer/plugins/__tests__/markdown-heading-number.ts
@@ -2,8 +2,13 @@ vi.mock('@fe/context', () => ({
   Plugin: class {},
 }))
 
+vi.mock('@fe/services/setting', () => ({
+  getSetting: vi.fn(),
+}))
+
 import MarkdownIt from 'markdown-it'
 import markdownHeadingNumber from '../markdown-heading-number'
+import { getSetting } from '@fe/services/setting'
 
 function createCtx (md: MarkdownIt) {
   md.renderer.rules.heading_open = function (tokens, idx, options, _env, slf) {
@@ -19,6 +24,12 @@ function createCtx (md: MarkdownIt) {
   } as any
 }
 
+const mockedGetSetting = vi.mocked(getSetting)
+
+beforeEach(() => {
+  mockedGetSetting.mockReset()
+})
+
 describe('markdown-heading-number plugin', () => {
   test('registers theme/view styles and markdown renderer plugin', () => {
     const ctx = createCtx(new MarkdownIt())
@@ -31,13 +42,23 @@ describe('markdown-heading-number plugin', () => {
   })
 
   test('adds show-number class when front matter enables heading numbers', () => {
+    mockedGetSetting.mockReturnValue(false)
     const md = new MarkdownIt()
     markdownHeadingNumber.register(createCtx(md))
 
     expect(md.render('## Numbered', { attributes: { headingNumber: true } })).toContain('<h2 class="show-number">Numbered</h2>')
   })
 
+  test('falls back to global setting when front matter does not set heading number', () => {
+    mockedGetSetting.mockReturnValue(true)
+    const md = new MarkdownIt()
+    markdownHeadingNumber.register(createCtx(md))
+
+    expect(md.render('## Fallback', {})).toContain('<h2 class="show-number">Fallback</h2>')
+  })
+
   test('leaves headings unchanged when heading numbers are disabled', () => {
+    mockedGetSetting.mockReturnValue(false)
     const md = new MarkdownIt()
     markdownHeadingNumber.register(createCtx(md))
 
diff --git a/src/renderer/plugins/markdown-heading-number.ts b/src/renderer/plugins/markdown-heading-number.ts
index f78755fc..fb93ad3f 100644
--- a/src/renderer/plugins/markdown-heading-number.ts
+++ b/src/renderer/plugins/markdown-heading-number.ts
@@ -1,5 +1,6 @@
 import type { Plugin } from '@fe/context'
 import type { FrontMatterAttrs } from '@fe/types'
+import { getSetting } from '@fe/services/setting'
 
 export default {
   name: 'markdown-heading-number',
@@ -102,8 +103,9 @@ export default {
       const headingOpen = md.renderer.rules.heading_open!
 
       md.renderer.rules.heading_open = function (tokens, idx, opt, env, slf) {
-        const attrs: FrontMatterAttrs = env.attributes
-        if (attrs.headingNumber) {
+        const attrs: FrontMatterAttrs = env?.attributes || {}
+        const headingNumber = attrs.headingNumber ?? getSetting('render.heading-number', false)
+        if (headingNumber) {
           const token = tokens[idx]
           token.attrJoin('class', 'show-number')
         }
diff --git a/src/renderer/services/export.ts b/src/renderer/services/export.ts
index 2e3506f6..dd970907 100644
--- a/src/renderer/services/export.ts
+++ b/src/renderer/services/export.ts
@@ -12,6 +12,7 @@ import { basename, dirname } from '@fe/utils/path'
 import { getRepo } from './repo'
 import { t } from './i18n'
 import { getContentHtml, getHeadings, getPreviewStyles, getRenderEnv, getRenderIframe } from './view'
+import { getSetting } from '@fe/services/setting'
 
 type HtmlExportOptions = Partial<NonNullable<ConvertOpts['fromHtmlOptions']>>
 
@@ -218,7 +219,8 @@ function buildHtml (title: string, body: string, options: HtmlExportOptions) {
   }
   const includeToc = options.includeToc || []
   const hasToc = includeToc.length > 0
-  const headingNumber = !!(getRenderEnv()?.attributes?.headingNumber)
+  const renderEnv = getRenderEnv()
+  const headingNumber = renderEnv?.attributes?.headingNumber ?? getSetting('render.heading-number', false)
   const bodyHtml = enhanceCodeBlocks(body, codeOptions)
   const codeBlockAssets = buildCodeBlockAssets(codeOptions)
 
diff --git a/src/renderer/types.ts b/src/renderer/types.ts
index cf222a28..af78cc8e 100644
--- a/src/renderer/types.ts
+++ b/src/renderer/types.ts
@@ -449,6 +449,7 @@ export interface BuildInSettings {
   'render.md-sub': boolean,
   'render.md-sup': boolean,
   'render.md-cj-friendly': boolean,
+  'render.heading-number': boolean,
   'render.multimd-multiline': boolean,
   'render.multimd-rowspan': boolean,
   'render.multimd-headerless': boolean,
diff --git a/src/share/i18n/languages/en.ts b/src/share/i18n/languages/en.ts
index 797a07d4..182f68f2 100644
--- a/src/share/i18n/languages/en.ts
+++ b/src/share/i18n/languages/en.ts
@@ -438,6 +438,7 @@ const data = {
         'md-html': 'Enable HTML',
         'md-breaks': 'Convert \\n to &lt;br&gt;',
         'md-linkify': 'Auto convert URL-like text to links',
+        'heading-number': 'Enable heading numbers in preview and export',
         'md-wiki-links': 'Enable Wiki Links - [[link]]',
         'md-hash-tags': 'Enable Hash Tags - #tag',
         'md-typographer': 'Enable some language-neutral replacement + quotes beautification',
diff --git a/src/share/i18n/languages/ru.ts b/src/share/i18n/languages/ru.ts
index f41cb370..95ade389 100644
--- a/src/share/i18n/languages/ru.ts
+++ b/src/share/i18n/languages/ru.ts
@@ -439,6 +439,7 @@ const data: BaseLanguage = {
         'md-html': 'Включить HTML',
         'md-breaks': 'Преобразовать \\n в &lt;br&gt;',
         'md-linkify': 'Автоматическое преобразование текста, похожего на URL, в ссылки',
+        'heading-number': 'Включить нумерацию заголовков',
         'md-wiki-links': 'Включить Wiki ссылки - [[ссылка]]',
         'md-hash-tags': 'Включить хештеги - #тег',
         'md-typographer': 'Включите некоторые языковые замены + улучшение кавычек',
diff --git a/src/share/i18n/languages/zh-CN.ts b/src/share/i18n/languages/zh-CN.ts
index eceb5c5b..2f99dff5 100644
--- a/src/share/i18n/languages/zh-CN.ts
+++ b/src/share/i18n/languages/zh-CN.ts
@@ -429,6 +429,7 @@ const data: BaseLanguage = {
         'md-html': '启用 HTML',
         'md-breaks': '将 \\n 转换为 &lt;br&gt;',
         'md-linkify': '自动将类似 URL 的文本转换为链接',
+        'heading-number': '启用标题编号',
         'md-wiki-links': '启用 Wiki 链接 - [[link]]',
         'md-hash-tags': '启用哈希标签 - #tag',
         'md-typographer': '启用排版美化，如 (c) -> ©',
diff --git a/src/share/i18n/languages/zh-TW.ts b/src/share/i18n/languages/zh-TW.ts
index c86e0921..2f4a9fbb 100644
--- a/src/share/i18n/languages/zh-TW.ts
+++ b/src/share/i18n/languages/zh-TW.ts
@@ -429,6 +429,7 @@ const data: BaseLanguage = {
         'md-html': '啟用 HTML',
         'md-breaks': '將 \\n 轉換為 &lt;br&gt;',
         'md-linkify': '自動將類似 URL 的文字轉換為連結',
+        'heading-number': '啟用標題編號',
         'md-wiki-links': '啟用 Wiki 連結 - [[link]]',
         'md-hash-tags': '啟用哈希標籤 - #tag',
         'md-typographer': '啟用排版美化，如 (c) -> ©',