diff --git a/src/i18n/index.ts b/src/i18n/index.ts
index aa344943..3e76e545 100644
--- a/src/i18n/index.ts
+++ b/src/i18n/index.ts
@@ -6,7 +6,7 @@ import enUS from './locales/en-US';
 
 const i18n = createI18n({
   legacy: false, // 使用 Composition API 的方式创建 i18n 实例
-  locale: localGet(CACHE_LOCAL_I18N) || 'zh_CN', // 默认显示语言
+  locale: localGet(CACHE_LOCAL_I18N) || 'en-US', // 默认显示语言
   messages: {
     zh_CN: zhCN,
     en_US: enUS,
diff --git a/src/plugins/http-fetch.ts b/src/plugins/http-fetch.ts
index 9a66419c..1eee7479 100644
--- a/src/plugins/http-fetch.ts
+++ b/src/plugins/http-fetch.ts
@@ -4,8 +4,12 @@ import {
   sessionGetJSON,
   sessionSetJSON,
 } from '@/utils/cache-session-utils';
+import { localGet } from '@/utils/cache-local-utils';
 import { TOKEN_KEY, TOKEN_KEY_PREFIX } from '@/constants/token-constants';
-import { CACHE_SESSION_FATCH } from '@/constants/cache-keys-constants';
+import {
+  CACHE_LOCAL_I18N,
+  CACHE_SESSION_FATCH,
+} from '@/constants/cache-keys-constants';
 import {
   APP_REQUEST_HEADER_CODE,
   APP_REQUEST_HEADER_VERSION,
@@ -92,6 +96,7 @@ const FATCH_OPTIONS: OptionsType = {
   headers: {
     [APP_REQUEST_HEADER_CODE]: import.meta.env.VITE_APP_CODE,
     [APP_REQUEST_HEADER_VERSION]: import.meta.env.VITE_APP_VERSION,
+    'Accept-Language': `${localGet(CACHE_LOCAL_I18N)};q=0.9`,
   },
   dataType: 'json',
   responseType: 'json',