diff --git a/public/javascripts/wechat/directives/iphone_recognize.js b/public/javascripts/wechat/directives/iphone_recognize.js
index f3b167b96..27462c7f0 100644
--- a/public/javascripts/wechat/directives/iphone_recognize.js
+++ b/public/javascripts/wechat/directives/iphone_recognize.js
@@ -9,24 +9,28 @@ app.directive('iphoneRecognize',["$timeout",function(timer){
            timer(function(){
                var contentHeight = $(".post-container").height();
                var toBottom = function(){
-                   element.css({"position":"relative","padding":"1px 0"});
-                   $(".post-wrapper").css("marginBottom","0");
-                   $("#all_homework_reply").css("marginBottom","0");
-                   window.scrollTo(0,contentHeight);
+                   element.css({"position":"absolute","padding":"1px 0","marginBottom":"-50px"});
+                   $(".post-wrapper").css({"marginBottom":"0","position":"relative"});
+                   $("#all_homework_reply,#all_blog_reply,#all_course_message_reply,#all_message_reply").css("marginBottom","0");
+                       window.scrollTo(0,contentHeight)
                };
-               if (/ipad|iphone|mac/i.test(navigator.userAgent)){
+//               if (/ipad|iphone|mac/i.test(navigator.userAgent)){
                    $("#postInput1").bind('focus',function(){
-                       toBottom();
+                       setTimeout(function(){
+                           toBottom();
+                       },200);
                    });
                    $("#postInput1,#replyBlock").bind("click",function(){
-                       toBottom();
+                       setTimeout(function(){
+                           toBottom();
+                       },200);
                    });
                    $("#postInput1").bind('blur',function(){
-                       element.css("position","fixed");
-                       $(".post-wrapper").css("marginBottom","10px");
-                       $("#all_homework_reply").css("marginBottom","50px");
+                       element.css({"position":"fixed","marginBottom":"0"});
+                       $(".post-wrapper").css({"marginBottom":"10px","position":""});
+                       $("#all_homework_reply,#all_blog_reply,#all_course_message_reply,#all_message_reply").css("marginBottom","52px");
                    });
-               }
+//               }
            })
         }
     }