diff --git a/public/manifest.firefox.json b/public/manifest.firefox.json
index 8a6ae79..e2b294b 100644
--- a/public/manifest.firefox.json
+++ b/public/manifest.firefox.json
@@ -3,7 +3,7 @@
   "name": "__MSG_app_name__",
   "description": "__MSG_app_description__",
   "version": "1.4.2",
-  "default_locale": "zh_CN",
+  "default_locale": "en",
   "author": "Gabe<yugang2002@gmail.com>",
   "homepage_url": "https://github.com/fishjar/kiss-translator",
   "background": {
diff --git a/public/manifest.json b/public/manifest.json
index 66f5279..53d1182 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -3,7 +3,7 @@
   "name": "__MSG_app_name__",
   "description": "__MSG_app_description__",
   "version": "1.4.2",
-  "default_locale": "zh_CN",
+  "default_locale": "en",
   "author": "Gabe<yugang2002@gmail.com>",
   "homepage_url": "https://github.com/fishjar/kiss-translator",
   "background": {
diff --git a/src/config/i18n.js b/src/config/i18n.js
index c981a5f..8b429ed 100644
--- a/src/config/i18n.js
+++ b/src/config/i18n.js
@@ -1,6 +1,6 @@
 export const UI_LANGS = [
-  ["zh", "中文"],
   ["en", "English"],
+  ["zh", "中文"],
 ];
 
 export const I18N = {
diff --git a/src/config/index.js b/src/config/index.js
index 57b12e8..ad96222 100644
--- a/src/config/index.js
+++ b/src/config/index.js
@@ -156,7 +156,7 @@ export const DEFAULT_RULE = {
 
 export const DEFAULT_SETTING = {
   darkMode: false, // 深色模式
-  uiLang: "zh", // 界面语言
+  uiLang: "en", // 界面语言
   fetchLimit: DEFAULT_FETCH_LIMIT, // 最大任务数量
   fetchInterval: DEFAULT_FETCH_INTERVAL, // 任务间隔时间
   clearCache: false, // 是否在浏览器下次启动时清除缓存