diff --git a/app/views/forums/show.html.erb b/app/views/forums/show.html.erb
index 8314c3902..25a4fae46 100644
--- a/app/views/forums/show.html.erb
+++ b/app/views/forums/show.html.erb
@@ -58,15 +58,15 @@
         if(!check_memo_name()){
             return;
         }
-        if($("textarea[name='memo[subject]']").val().trim() != "" && memo_content.html().trim() != "" ){
+        if($("textarea[name='memo[subject]']").val().trim() != "" && !memo_content.isEmpty() ){
             memo_content.sync();
             $("#new_memo").submit();
-        }else if($("textarea[name='memo[subject]']").val().trim() == "" && memo_content.html().trim() == ""){
+        }else if($("textarea[name='memo[subject]']").val().trim() == "" && memo_content.isEmpty()){
             $("#error").html("主题和内容不能为空").show();
         }
-        else if($("textarea[name='memo[subject]']").val().trim() == "" && memo_content.html().trim() != "" ){
+        else if($("textarea[name='memo[subject]']").val().trim() == "" && !memo_content.isEmpty() ){
             $("#error").html("主题不能为空").show();
-        }else if($("textarea[name='memo[subject]']").val().trim() != "" && memo_content.html().val().trim() == ""){
+        }else if($("textarea[name='memo[subject]']").val().trim() != "" && memo_content.isEmpty()){
             $("#error").html("内容不能为空").show();
         }
     }