diff --git a/app/views/projects/_member_list.html.erb b/app/views/projects/_member_list.html.erb
index 9143ae971..e29dde733 100644
--- a/app/views/projects/_member_list.html.erb
+++ b/app/views/projects/_member_list.html.erb
@@ -7,7 +7,11 @@
 		<% end %>
 		<%= member.user.nil? ? '' : (image_tag(url_to_avatar(member.user), :class => 'avatar'))  %>
 		<%= content_tag "div", link_to(member.user.show_name, user_path(member.user)), :class => "nomargin avatar_name" %>
-	    <%= l(:label_bidding_user_studentcode) %> ：<%= member.user.user_extensions.student_id%>   <!-- added by bai 加学号 -->
+		<!--teacher's code disapeared  moified by huang-->
+		<% unless member.user.user_extensions.identity ==0 %>
+	    <!-- added by bai 加学号 -->	    
+	    <%= content_tag "p", "#{l(:label_bidding_user_studentcode)}#{' : '}#{member.user.user_extensions.student_id}", :class => "nomargin avatar_name" %>
+		<% end %>
 		<% if @project.project_type == 1 %>
 			<div class ="clear avatar_name"> &nbsp;
 				<p>