diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index 968b050c3..438652557 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -68,13 +68,14 @@
 </table>
 </div> -->
 <!--add by huang-->
-<div class="table_">
+<div class="table_" style="height:230px;">
 	<table>
 	<tr><td align="left">
     	<%= call_hook :view_account_login_top %>
 		<div id="login-form_new">
 		<%= form_tag(signin_path) do %>
 		<%= back_url_hidden_field_tag %>
+		<% unless User.current.logged? %><!--Modified by young-->
 		<table>
 		<tr>
     		<td align="right"><label for="username">用户:</label></td>
@@ -109,6 +110,7 @@
     		</td>
 		</tr>
     </table>
+    <% end %>
 <% end %>
 </div>
 <%= call_hook :view_account_login_bottom %>