diff --git a/app/views/libraries/show.html.erb b/app/views/libraries/show.html.erb
index 252dddec..8c55b63a 100644
--- a/app/views/libraries/show.html.erb
+++ b/app/views/libraries/show.html.erb
@@ -100,8 +100,12 @@
     });
     $(function(){
         var height=document.getElementById("private_reason_ul").offsetHeight;
+        var one=parseInt($("#private_reason_ul").find("li").eq(0).height())+10;
+        var two=parseInt($("#private_reason_ul").find("li").eq(1).height());
+        var plus=one+two;
         if(parseInt(height)>166){
             $("#actionPanel").html('点击展开<i class="iconfont icon-xiajiantou color-blue font-14 ml5"></i>');
+            $(".private_reason").css({maxHeight:plus+"px"});
         }
     })
 </script>
\ No newline at end of file