diff --git a/public/javascripts/wechat/app.js b/public/javascripts/wechat/app.js
index 119e962d1..5a18a2e35 100644
--- a/public/javascripts/wechat/app.js
+++ b/public/javascripts/wechat/app.js
@@ -21,20 +21,22 @@ app.factory('auth', function($http,$routeParams, $cookies){
             method: 'POST'
         }).then(function successCallback(response) {
             _openid = response.data.openid;
-            if(debug !== true){ //如果是生产环境,就存到cookies中
-                $cookies.put("openid", _openid);
+            if(typeof _openid !== 'undefined' && _openid.length>0){
+                if(debug !== true){ //如果是生产环境,就存到cookies中
+                    $cookies.put("openid", _openid);
+                }
+            } else {
+                if(debug!==true){//考虑从cookies中取出
+                    _openid = $cookies.get('openid');
+                }
             }
+
             cb(_openid);
         }, function errorCallback(response) {
-            if(debug!==true){//考虑从cookies中取出
-                _openid = $cookies.get('openid');
-            }
-            cb(_openid);
+            cb(null);
         });
 
     };
-
-
     var openid = function(){
         return _openid;
     }