diff --git a/app/views/account/login.html.erb b/app/views/account/login.html.erb
index fadf5e465..b316aa406 100644
--- a/app/views/account/login.html.erb
+++ b/app/views/account/login.html.erb
@@ -128,6 +128,11 @@
         });
 
         $mail.blur(function (event) {
+            if (/^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$/.test(this.value) == false){
+                $('#mail_req').html( '<span style="color: red">邮件格式不对</span>').show();
+                $mail_correct = false;
+                return ;
+            }
             if ($(this).is('#user_mail')) {
                 $.get('<%=account_valid_ajax_path%>',
                         { valid: "mail",