diff --git a/src/i18n/index.ts b/src/i18n/index.ts
index f7acccc8..aa344943 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) || 'en_US', // 默认显示语言
+  locale: localGet(CACHE_LOCAL_I18N) || 'zh_CN', // 默认显示语言
   messages: {
     zh_CN: zhCN,
     en_US: enUS,
diff --git a/src/i18n/locales/en-US.ts b/src/i18n/locales/en-US.ts
index 6e16af8a..f6d4fa27 100644
--- a/src/i18n/locales/en-US.ts
+++ b/src/i18n/locales/en-US.ts
@@ -397,7 +397,7 @@ export default {
         alarmCode: 'Alarm Code',
         origLevel: 'Severity',
         eventTime: 'Event Time',
-        pvFlag: 'Physical/Virtual Flag',
+        pvFlag: 'PV Flag',
         alarmType: 'Alarm Type',
         confirm: 'Confirm',
         updateConfirm: 'Cancel Confirm',