diff --git a/app/views/challenges/_form.html.erb b/app/views/challenges/_form.html.erb
index 8eab0e4b8..170e9924b 100644
--- a/app/views/challenges/_form.html.erb
+++ b/app/views/challenges/_form.html.erb
@@ -67,14 +67,10 @@
   <li class="clearfix">
     <label class=" panel-form-label fl"> 知识/技能点：</label>
     <div class="fl task-bd-grey">
-      <div class="task-tag tag-grey mb10 mr10 fl">
-        <button data-dismiss="alert" class="close fr mt3 ml5" type="button">×</button>
-        使用交互模式的 Python3 解释器
-      </div>
-      <button class="close fl mt3 mr10" type="button" onclick="$('#add_shixun_skill').slideToggle();">+</button>
+      <button class="close fl mt3 mr10" type="button" onclick="$('#add_shixun_skill').slideToggle();" id="add_knowledge">+</button>
       <div class="task-tag tag-grey mb10 mr10 fl undis" id="add_shixun_skill">
         <button data-dismiss="alert" class="close fr mt3 ml5" type="button" onclick="$('#add_shixun_skill').slideToggle();">×</button>
-        <input type="text" class="task-tag-input" placeholder="请输入知识/技能点" />
+        <input type="text" class="task-tag-input" onblur="add_tag();" placeholder="请输入知识/技能点" />
       </div>
     </div>
   </li>
@@ -96,6 +92,25 @@
 </div>
 
 <script type="text/javascript">
+    function add_tag(){
+        var num = $(".task-bd-grey").children('div').length;
+        var val = $(".task-tag-input").val().trim();
+        if (val != ""){
+            testLength = $(".task-tag-input").val().trim().length;
+            $("#add_knowledge").before("<div class='task-tag tag-grey mb10 mr10 fl' id='knowledge_" + num + "'>" +
+                    "<button data-dismiss='alert' class='close fr mt3 ml5' type='button' onclick='close_tag(this)'>×</button>" +
+                    "<input style='width:"+ testLength*12 +"px' class='knowledge_frame' name='knowledge[input]' value='" + val +"'>" +
+                    " </div>");
+            $(".task-tag-input").attr("value","");
+        }
+    }
+
+    function close_tag(thisObj){
+        // 获取父节点的id
+        var obj = thisObj.parentNode.id;
+        $("#"+obj).remove();
+    }
+
     $(function () {
         var bt = baidu.template;
         bt.LEFT_DELIMITER = '<!';
diff --git a/app/views/repositories/shixun_show.html.erb b/app/views/repositories/shixun_show.html.erb
index 3cb515feb..e6654edc8 100644
--- a/app/views/repositories/shixun_show.html.erb
+++ b/app/views/repositories/shixun_show.html.erb
@@ -18,10 +18,12 @@
           <a href="<%= @zip_path %>" class="btn_zipdown fl ml10" onclick="">ZIP下载</a>
       <% end %>
 
-      <div class="fr ">
+      <div class="fr">
         <label class="pro-fenzhi-label fl">克隆网址</label>
         <input type="text" id="copy_rep_content" class="pro-fenzhi-input fl" value="<%= @repos_url.to_s.lstrip %>"/>
-        <a href="javascript:void(0);" alt="点击复制版本库地址" onclick="jsCopy()" title="点击复制版本库地址" class="fl pro-fenzhi-a"><i class="icon-copy"></i></a>
+        <a href="javascript:void(0);" alt="点击复制版本库地址" onclick="jsCopy()" title="点击复制版本库地址" class="fl pro-fenzhi-a">
+          <i class="icon-copy"></i>
+        </a>
       </div>
     </div>
 
diff --git a/public/stylesheets/css/taskstyle.css b/public/stylesheets/css/taskstyle.css
index 5c3bdc951..cd7b792a5 100644
--- a/public/stylesheets/css/taskstyle.css
+++ b/public/stylesheets/css/taskstyle.css
@@ -156,4 +156,5 @@ input.task-tag-input{ border:none; background: none; height:30px; padding:0 5px;
 textarea.task-textarea-pd{ padding-bottom: 0px; padding-top:0px;}
 .task-setting-tab{ height:600px;}
 .task-pd15-box{ padding:15px;}
-.mb20{margin-bottom: 20px;}
\ No newline at end of file
+.mb20{margin-bottom: 20px;}
+input.knowledge_frame{height:30px;line-height:30px;border:none;background:#f3f5f7;}
\ No newline at end of file