diff --git a/public/javascripts/edu/application.js b/public/javascripts/edu/application.js
index ec879fbda..6ed36e79b 100644
--- a/public/javascripts/edu/application.js
+++ b/public/javascripts/edu/application.js
@@ -291,7 +291,7 @@ function notice_box_redirect_remote(url, str){
 // 警告/提示弹框点击“x”关闭
 $(function(){
     $("button.task-close").live('click', function(){
-        $("button.task-close").parent().remove();
+        $("button.task-close").parent().hide();
     });
 });