diff --git a/packages/calendar/index.wxs b/packages/calendar/index.wxs
index d43fa6fd..3de62583 100644
--- a/packages/calendar/index.wxs
+++ b/packages/calendar/index.wxs
@@ -4,14 +4,11 @@ var utils = require('./utils.wxs');
 function getMonths(minDate, maxDate) {
   var months = [];
   var cursor = getDate(minDate);
-  cursor.setHours(0);
-  cursor.setMinutes(0);
-  cursor.setSeconds(0);
 
   cursor.setDate(1);
 
   do {
-    months.push(cursor.getTime());
+    months.push(cursor.valueOf());
     cursor.setMonth(cursor.getMonth() + 1);
   } while (utils.compareMonth(cursor, getDate(maxDate)) !== 1);