diff --git a/app/views/boards/show.html.erb b/app/views/boards/show.html.erb
index 703657767..863d524ec 100644
--- a/app/views/boards/show.html.erb
+++ b/app/views/boards/show.html.erb
@@ -97,12 +97,12 @@ function nh_check_field(params){
     }
 
     if(params.content!=undefined){
-        if($.trim(params.content.html()) == ""){
+        if(params.content.isEmpty()){
             result=false;
         }
         if(params.content.html()!=params.textarea.html() || params.issubmit==true){
             params.textarea.html(params.content.html());
-            if($.trim(params.content.html()) == ""){
+            if(params.content.isEmpty()){
                 params.contentmsg.html('内容不能为空');
                 params.contentmsg.css({color:'#ff0000'});
             }else{