diff --git a/app/controllers/zipdown_controller.rb b/app/controllers/zipdown_controller.rb
index 808df65dc..4fddec103 100644
--- a/app/controllers/zipdown_controller.rb
+++ b/app/controllers/zipdown_controller.rb
@@ -27,7 +27,7 @@ class ZipdownController < ApplicationController
       else
         logger.error "[ZipDown#assort] ===> #{obj.class.to_s.to_sym} unKown !!"
     end
-    send_file zipfile, :filename => obj.name, :type => detect_content_type(zipfile) if zipfile
+    send_file zipfile, :filename => obj.name+".zip", :type => detect_content_type(zipfile) if zipfile
 
   #rescue NameError, ActiveRecord::RecordNotFound => e
     #logger.error "[ZipDown] ===> #{e}"
@@ -39,7 +39,7 @@ class ZipdownController < ApplicationController
     homework = HomeworkAttach.find params[:homework]
     if homework != nil && (User.current.admin? || User.current.member_of?(homework.bid.courses.first))
       zipfile = zip_homework_by_user homework
-      send_file zipfile, :filename => homework.name, :type => detect_content_type(zipfile) if zipfile
+      send_file zipfile, :filename => homework.name+".zip", :type => detect_content_type(zipfile) if zipfile
     else
       render_403 :message => :notice_not_authorized
     end
@@ -88,7 +88,7 @@ class ZipdownController < ApplicationController
       #length = attach.storage_path.length
       homeworks_attach_path << attach.diskfile#.to_s.slice((length+1)..-1)
     end
-    zipping "#{homeattach.user.name.to_s}.zip", homeworks_attach_path, OUTPUT_FOLDER, true
+    zipping "#{homeattach.user.name.to_s}_#{Time.now.to_i}.zip", homeworks_attach_path, OUTPUT_FOLDER, true
     #user_attaches_paths
   end
 
diff --git a/app/views/bids/_homework.html.erb b/app/views/bids/_homework.html.erb
index 4e2681ba6..1a55dc243 100644
--- a/app/views/bids/_homework.html.erb
+++ b/app/views/bids/_homework.html.erb
@@ -27,7 +27,7 @@
           (Member.where('user_id = ? and project_id = ?', User.current.id,
           @bid.courses.first.id).first.roles&Role.where('id = ? or id = ? or id =?',5, 10, 7)).size >0) && cur_user_homework_for_bid(@bid).count == 0  %>
 <div class='icon icon-add'>
-	<!-- <%= link_to l(:label_commit_homework), new_submit_homework_path, :onclick => "$('#put-bid-form').slideToggle(); this.blur(); return false;" %> -->
+		<%#= link_to l(:label_commit_homework), new_submit_homework_path, :onclick => "$('#put-bid-form').slideToggle(); this.blur(); return false;" %>
     <%= link_to l(:label_course_new_homework),new_homework_attach_path  %>
 </div>
 <% end %>
diff --git a/app/views/bids/_homework_list.html.erb b/app/views/bids/_homework_list.html.erb
index 18778f5e9..c49013cbf 100644
--- a/app/views/bids/_homework_list.html.erb
+++ b/app/views/bids/_homework_list.html.erb
@@ -8,7 +8,7 @@
 	<table width="100%" valign="center">
 		<tr>
 			<td ><span style="margin-left:0px"><%= l(:label_task_plural)%>(<%= @homework_list.count%>)</span>
-        <%= link_to "作业打包下载", zipdown_assort_path(obj_class: @bid.class, obj_id: @bid), remote: false, class: "button_submit button_submit_font_white", style: "margin: 5px 10px;line-height: 20px;height: 20px;display: inline-block;" if(
+        <%#= link_to "作业打包下载", zipdown_assort_path(obj_class: @bid.class, obj_id: @bid), remote: false, class: "button_submit button_submit_font_white", style: "margin: 5px 10px;line-height: 20px;height: 20px;display: inline-block;" if(
           User.current.admin? ||
           !(User.current.roles_for_project(@bid.courses.first).map(&:id) & ([7,9])).empty? ) ||
           (Rails.env.development?) %>