diff --git a/index.js b/index.js
index bb39321daf..e53330fe2e 100644
--- a/index.js
+++ b/index.js
@@ -40,7 +40,8 @@ import moment from './lib/module/moment';
 import Hammer from './lib/module/hammer';
 import keycharm from 'keycharm';
 
-moment.locale('en')
+const defaultLanguage = DOMutil.getNavigatorLanguage()
+moment.locale(defaultLanguage)
 
 const timeline = {
   Core ,
diff --git a/lib/DOMutil.js b/lib/DOMutil.js
index 74f8e88b18..2bc9d8e7e8 100644
--- a/lib/DOMutil.js
+++ b/lib/DOMutil.js
@@ -217,4 +217,16 @@ export function drawBar (x, y, width, height, className, JSONcontainer, svgConta
       rect.setAttributeNS(null, "style", style);
     }
   }
-}
\ No newline at end of file
+}
+
+/**
+ * get default language
+ * @returns {string}
+ */
+export function getNavigatorLanguage() {
+  if (navigator.languages && navigator.languages.length) {
+    return navigator.languages;
+  } else {
+    return navigator.userLanguage || navigator.language || navigator.browserLanguage || 'en';
+  }
+}