diff --git a/app/views/bids/_bid_homework_show.html.erb b/app/views/bids/_bid_homework_show.html.erb
index 73a9bc6bd..166a4b224 100644
--- a/app/views/bids/_bid_homework_show.html.erb
+++ b/app/views/bids/_bid_homework_show.html.erb
@@ -1,4 +1,23 @@
 <!--modified by huang-->
+<script type="text/javascript">
+    function ShowCountDown(year,month,day,divname)
+    {
+        var now = new Date();
+        var endDate = new Date(year, month-1, day);
+        var leftTime=endDate.getTime()-now.getTime();
+        var leftsecond = parseInt(leftTime/1000);
+        var day1=Math.floor(leftsecond/(60*60*24));
+        var hour=Math.floor((leftsecond-day1*24*60*60)/3600);
+        var minute=Math.floor((leftsecond-day1*24*60*60-hour*3600)/60);
+        var second=Math.floor(leftsecond-day1*24*60*60-hour*3600-minute*60);
+        $("#"+divname).html("<span style='color: #acaeb1;'>作业提交还剩&nbsp;:</span>&nbsp;<span style='color: red;'>"
+                +day1+"&nbsp;</span><span style='color: #acaeb1;'>天</span><span style='color: red;'>&nbsp;"
+                +hour+"&nbsp;</span><span style='color: #acaeb1;'>时</span><span style='color: red;'>&nbsp;"
+                +minute+"&nbsp;</span><span style='color: #acaeb1;'>分</span><span style='color: red;'>&nbsp;"
+                +second+"&nbsp;</span><span style='color: #acaeb1;'>秒</span>");
+    }
+</script>
+
 <% if bids.blank? %>
 <%#= l(:label_uncommit_homework) %>
 暂无作业！
@@ -100,11 +119,11 @@
                       <%= l(:label_commit_limit)%>
                     </span>
                   <% else %>
-                      <% if betweentime(bid.deadline) < 3 %>
-                          <span style="color: red">
-                            <%= l(:label_commit_ar) %>
-                          </span>
-                      <% end %>
+                      <script type="text/javascript">
+                          window.setInterval(function(){ShowCountDown(<%= bid.deadline.year%>,<%= bid.deadline.month%>,<%= bid.deadline.day + 1%>,"show_deadtime_span_<%= bid.id%>");},1000)
+                      </script>
+                      <span id="show_deadtime_span_<%= bid.id%>" style="float: right">
+                      </span>
                   <% end %>
                 </span>
               </td>