diff --git a/app/views/users/_project_issue.html.erb b/app/views/users/_project_issue.html.erb
index 8b9acb36e..04f541d77 100644
--- a/app/views/users/_project_issue.html.erb
+++ b/app/views/users/_project_issue.html.erb
@@ -141,7 +141,7 @@
                 image.wrap(element);
             }
         }
-        $('#activity_description_<%= user_activity_id %> a').colorbox({rel:'nofollow', close: "关闭"});
+        $('#activity_description_<%= user_activity_id %> a').colorbox({rel:'nofollow', close: "关闭", returnFocus: false});
     });
 
 </script>
\ No newline at end of file
diff --git a/app/views/users/_user_activities.html.erb b/app/views/users/_user_activities.html.erb
index 4ff98b1b7..f071cbeb4 100644
--- a/app/views/users/_user_activities.html.erb
+++ b/app/views/users/_user_activities.html.erb
@@ -9,7 +9,6 @@
     span.ke-icon-emoticons:hover{background-position:-79px -671px;width:50px;height:26px;}
     div.ke-toolbar .ke-outline{border:none;}
     .ke-inline-block{display: none;}
-    .ke-container{height: 30px !important;}
 </style>
 <% user_activities.each do |user_activity|
   if user_activities %>
diff --git a/lib/rails_kindeditor/lib/rails_kindeditor/helper.rb b/lib/rails_kindeditor/lib/rails_kindeditor/helper.rb
index d5f91ebf8..c9908d80f 100644
--- a/lib/rails_kindeditor/lib/rails_kindeditor/helper.rb
+++ b/lib/rails_kindeditor/lib/rails_kindeditor/helper.rb
@@ -17,7 +17,8 @@ module RailsKindeditor
       output_buffer = ActiveSupport::SafeBuffer.new
       output_buffer << build_text_area_tag(name, method, self, options, input_html)
       output_buffer << javascript_tag(js_replace(input_html['id'],options.merge(window_onload: 'true',
-                                                                                afterCreate: 'eval(function(){enablePasteImg(self);})')))
+                                                                                 :autoHeightMode=>true,
+                                                                                afterCreate: 'eval(function(){enablePasteImg(self);this.loadPlugin("autoheight")})')))
     end
     
     def kindeditor_upload_json_path(*args)
diff --git a/public/javascripts/init_KindEditor.js b/public/javascripts/init_KindEditor.js
index fc02146bb..f2b7915ad 100644
--- a/public/javascripts/init_KindEditor.js
+++ b/public/javascripts/init_KindEditor.js
@@ -1,14 +1,31 @@
 function init_editor(params){
+    var minHeight;
     var editor = params.kindutil.create(params.textarea, {
-        resizeType : 1,minWidth:"1px",width:"100%",height:"80px",
-        items:['emoticons'],
+        resizeType : 1,minWidth:"1px",width:"100%",height:"30px",minHeight:"30px",
+            items:['emoticons'],
         afterChange:function(){//按键事件
             nh_check_field({content:this,contentmsg:params.contentmsg,textarea:params.textarea});
+            var edit = this.edit;
+            var body = edit.doc.body;
+            edit.iframe.height(minHeight);
+            this.resize(null, Math.max((params.kindutil.IE ? body.scrollHeight : body.offsetHeight) + 30, minHeight));
         },
         afterCreate:function(){
             var toolbar = $("div[class='ke-toolbar']",params.div_form);
             $(".ke-outline>.ke-toolbar-icon",toolbar).append('表情');
             params.toolbar_container.append(toolbar);
+            //init
+            var edit = this.edit;
+            var body = edit.doc.body;
+            edit.iframe[0].scroll = 'no';
+            body.style.overflowY = 'hidden';
+            //reset height
+            var edit = this.edit;
+            var body = edit.doc.body;
+            minHeight = params.kindutil.removeUnit(this.height);
+            edit.iframe.height(minHeight);
+            this.resize(null, Math.max((params.kindutil.IE ? body.scrollHeight : body.offsetHeight)+ 30 , minHeight));
+
         }
     }).loadPlugin('paste');
     return editor;