diff --git a/mindinsight/ui/src/i18n.js b/mindinsight/ui/src/i18n.js
index 30cfdb12..0745c33c 100644
--- a/mindinsight/ui/src/i18n.js
+++ b/mindinsight/ui/src/i18n.js
@@ -48,8 +48,8 @@ let langflag;
 if (langStorge && languageList.includes(langStorge)) {
   langflag = langStorge;
 } else {
-  // set Chinese if no default language
-  langflag = languageList[0];
+  // set English if no default language
+  langflag = languageList[1];
   window.localStorage.setItem('milang', langflag);
 }
 
diff --git a/mindinsight/ui/src/main.js b/mindinsight/ui/src/main.js
index 93804c80..37f5a14e 100644
--- a/mindinsight/ui/src/main.js
+++ b/mindinsight/ui/src/main.js
@@ -29,7 +29,7 @@ import localezh from 'element-ui/lib/locale/lang/zh-CN';
 let language = window.localStorage.getItem('milang');
 const languageList = ['zh-cn', 'en-us'];
 if (!language || !languageList.includes(language)) {
-  language = languageList[0];
+  language = languageList[1];
   window.localStorage.setItem('milang', language);
 }