diff --git a/src/App.tsx b/src/App.tsx
index 772f07d..d4230b8 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -28,17 +28,10 @@ import { QuotaPage } from './pages/QuotaPage';
 import { AgentsPage } from './pages/AgentsPage';
 import { ThinkingAliasesPage } from './pages/ThinkingAliasesPage';
 import { UsageRecordsPage } from './pages/UsageRecordsPage';
-import { useI18n } from './i18n';
+import { languageOptions, useI18n } from './i18n';
 
 const CONTACT_URL = 'https://qm.qq.com/q/3queDaIG';
 
-const languageOptions = [
-  { value: 'zh-CN', labelKey: 'app.language.zhCN' },
-  { value: 'zh-TW', labelKey: 'app.language.zhTW' },
-  { value: 'ja', labelKey: 'app.language.ja' },
-  { value: 'en', labelKey: 'app.language.en' },
-] as const;
-
 const pages = [
   {
     id: 'kernel',
@@ -282,7 +275,7 @@ function AppContent() {
                 onClick={() => setLanguageMenuOpen((open) => !open)}
               >
                 <Languages size={16} aria-hidden="true" />
-                <span>{t(selectedLanguage.labelKey)}</span>
+                <span lang={selectedLanguage.value}>{selectedLanguage.nativeLabel}</span>
                 <ChevronUp
                   size={14}
                   aria-hidden="true"
@@ -310,7 +303,7 @@ function AppContent() {
                           setLanguageMenuOpen(false);
                         }}
                       >
-                        <span>{t(option.labelKey)}</span>
+                        <span lang={option.value}>{option.nativeLabel}</span>
                         {selected ? <Check size={14} aria-hidden="true" /> : null}
                       </button>
                     );
diff --git a/src/i18n/index.tsx b/src/i18n/index.tsx
index 2893455..9e86c94 100644
--- a/src/i18n/index.tsx
+++ b/src/i18n/index.tsx
@@ -4,6 +4,16 @@ import { en, ja, zhCN, zhTW, type MessageKey, type MessageVariables } from './re
 
 export type AppLocale = 'zh-CN' | 'zh-TW' | 'ja' | 'en';
 
+export const languageOptions: ReadonlyArray<{
+  value: AppLocale;
+  nativeLabel: string;
+}> = [
+  { value: 'zh-CN', nativeLabel: '简体中文' },
+  { value: 'zh-TW', nativeLabel: '繁體中文' },
+  { value: 'ja', nativeLabel: '日本語' },
+  { value: 'en', nativeLabel: 'English' },
+];
+
 const STORAGE_KEY = 'easy-cli-proxy-api.locale';
 const resources = { 'zh-CN': zhCN, 'zh-TW': zhTW, ja, en } as const;
 let currentLocale: AppLocale = 'zh-CN';
diff --git a/src/i18n/ja.ts b/src/i18n/ja.ts
index 06bff74..a60c577 100644
--- a/src/i18n/ja.ts
+++ b/src/i18n/ja.ts
@@ -2,10 +2,6 @@ import type { MessageKey } from './resources';
 
 export const jaOverrides = {
   'app.language': '言語',
-  'app.language.zhCN': '簡体字中国語',
-  'app.language.zhTW': '繁体字中国語',
-  'app.language.ja': '日本語',
-  'app.language.en': 'English',
   'app.desktopConsole': 'デスクトップコンソール',
   'app.navigation': 'メインナビゲーション',
   'app.nav.kernel': 'コア',
diff --git a/src/i18n/resources.ts b/src/i18n/resources.ts
index aaf30ae..44dc60b 100644
--- a/src/i18n/resources.ts
+++ b/src/i18n/resources.ts
@@ -5,10 +5,6 @@ export type MessageVariables = Record<string, string | number>;
 
 export const zhCN = {
   'app.language': '语言',
-  'app.language.zhCN': '简体中文',
-  'app.language.zhTW': '繁体中文',
-  'app.language.ja': '日语',
-  'app.language.en': 'English',
   'app.desktopConsole': '桌面控制台',
   'app.navigation': '主导航',
   'app.nav.kernel': '内核',
@@ -682,10 +678,6 @@ export type MessageKey = keyof typeof zhCN;
 
 export const en: Record<MessageKey, string> = {
   'app.language': 'Language',
-  'app.language.zhCN': '简体中文',
-  'app.language.zhTW': 'Traditional Chinese',
-  'app.language.ja': 'Japanese',
-  'app.language.en': 'English',
   'app.desktopConsole': 'Desktop Console',
   'app.navigation': 'Main navigation',
   'app.nav.kernel': 'Core',
diff --git a/tests/i18n.test.ts b/tests/i18n.test.ts
index e4d4132..c375c24 100644
--- a/tests/i18n.test.ts
+++ b/tests/i18n.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'bun:test';
-import { normalizeLocale, translate } from '../src/i18n';
+import { languageOptions, normalizeLocale, translate } from '../src/i18n';
 import { en, ja, zhCN, zhTW } from '../src/i18n/resources';
 import { jaOverrides } from '../src/i18n/ja';
 
@@ -25,6 +25,15 @@ describe('i18n', () => {
       .toBe('1.2.3 をインストールしています');
   });
 
+  it('uses each language native name independently of the active locale', () => {
+    expect(languageOptions).toEqual([
+      { value: 'zh-CN', nativeLabel: '简体中文' },
+      { value: 'zh-TW', nativeLabel: '繁體中文' },
+      { value: 'ja', nativeLabel: '日本語' },
+      { value: 'en', nativeLabel: 'English' },
+    ]);
+  });
+
   it('keeps both locale dictionaries structurally aligned', () => {
     expect(Object.keys(en).sort()).toEqual(Object.keys(zhCN).sort());
     expect(Object.keys(zhTW).sort()).toEqual(Object.keys(zhCN).sort());