diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 86b8d7af7..c6c17edf9 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -76,7 +76,7 @@
 <div class="cl"></div>
 <script type="text/javascript">
     $(function (){
-        $("#course_id").append("<option value='-1'hidden selected>请选择发布作业的课程</option>");
+        $("#course_id").append("<option value='-1' id='option_select' hidden selected>请选择发布作业的课程</option>");
     });
 </script>
 
diff --git a/app/views/users/user_homeworks.html.erb b/app/views/users/user_homeworks.html.erb
index bc314565a..18238bf8f 100644
--- a/app/views/users/user_homeworks.html.erb
+++ b/app/views/users/user_homeworks.html.erb
@@ -1,8 +1,8 @@
 <script type="text/javascript">
   function reset_homework(){
       $("#homework_name").val("");
-      $("#homework_end_time").val("<%= (Time.now  + 3600 * 24).strftime('%Y-%m-%d')%>");
-      $("#course_id").val("");
+      $("#homework_end_time").val("");
+      $("#course_id").val($("#option_select").val());
       $("#homework_attachments").html("<%= escape_javascript(render :partial => 'users/user_homework_attachment', :locals => { :container => HomeworkCommon.new })%>");
       homework_description_editor.html("");
   }