diff --git a/app/views/layouts/_new_feedback.html.erb b/app/views/layouts/_new_feedback.html.erb
index 34dc96491..67b4af32c 100644
--- a/app/views/layouts/_new_feedback.html.erb
+++ b/app/views/layouts/_new_feedback.html.erb
@@ -13,8 +13,9 @@
         <div class="custom_service">
           <% get_memo %>
           <%= form_for(@new_memo, :url => create_feedback_forum_path(@public_forum)) do |f|  %>
-              <%= f.text_area :subject, :class => "opnionText", :placeholder => l(:label_feedback_tips) %>
+              <%= f.text_area :subject, :id=>"subject", :class => "opnionText", :placeholder => l(:label_feedback_tips) %>
               <%= f.hidden_field :content,:id => 'hidden', :required => true , :value => l(:label_feedback_value) %>
+              <label class="c_grey">您还能输入<span id="textCount" class="c_orange">50</span>个字符</label>
               <a href="javascript:void(0);" class="opnionButton" style=" color:#fff;" id="" onclick="f_submit();">
                 <%= l(:label_submit)%>
               </a>
diff --git a/public/javascripts/feedback.js b/public/javascripts/feedback.js
index eab86bf20..5b06be7e6 100644
--- a/public/javascripts/feedback.js
+++ b/public/javascripts/feedback.js
@@ -110,4 +110,18 @@ $(document).ready(function () {
             durationTime: 600
         });
     });
-});
\ No newline at end of file
+});
+
+
+$(document).ready(function(){
+    $("#subject").keydown(function(){
+        var curLength=$("#subject").val().length;
+        if(curLength>=50){
+            var num=$("#subject").val().substr(0,49);
+            $("#subject").val(num);
+        }
+        else{
+            $("#textCount").text(49-$("#subject").val().length);
+        }
+    })
+})
\ No newline at end of file