diff --git a/app/views/libraries/show.html.erb b/app/views/libraries/show.html.erb
index 6779090b..66ed8ba3 100644
--- a/app/views/libraries/show.html.erb
+++ b/app/views/libraries/show.html.erb
@@ -25,15 +25,17 @@
         <p class="mb10 clearfix">
           <span class="color-grey-6 font-16 mr10">私有化原因</span>
           <span class="color-grey-c font-12">（请按照提示修改，并在完成编辑后重新提交）</span>
-          <a href="javascript:void(0)" class="color-blue fr" at="0" onclick="getMore(this)">点击展开<i class="iconfont icon-xiajiantou color-blue font-14 ml5"></i></a>
+          <a href="javascript:void(0)" class="color-blue fr" id="actionPanel" at="0" onclick="getMore(this)"></a>
 
         <div class="private_reason">
+          <ul id="private_reason_ul">
           <% @library_applies.each do |apply| %>
             <li>
               <p class="color-grey-9"><%= apply.updated_at.strftime('%Y-%m-%d %H:%M') %></p>
               <p class="lineh-25 font-16 break-word"><%= apply.reason %></p>
             </li>
           <% end %>
+          </ul>
         </div>
       </div>
     <% end %>
@@ -93,4 +95,10 @@
         flowChart: true,  // 默认不解析
         sequenceDiagram: true // 默认不解析
     });
+    $(function(){
+        var height=document.getElementById("private_reason_ul").offsetHeight;
+        if(parseInt(height)>166){
+            $("#actionPanel").html('点击展开<i class="iconfont icon-xiajiantou color-blue font-14 ml5"></i>');
+        }
+    })
 </script>
\ No newline at end of file