diff --git a/app/helpers/users_helper.rb b/app/helpers/users_helper.rb
index 3f3cacae3..b9f762f69 100644
--- a/app/helpers/users_helper.rb
+++ b/app/helpers/users_helper.rb
@@ -546,7 +546,7 @@ module UsersHelper
     type = []
     user.courses.select{|c| user.allowed_to?(:as_teacher,c)}.each do |course|
       option = []
-      option << course.name
+      option << course.name+"（"+course.time.to_s+course.term+"）"
       option << course.id
       type << option
     end
diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 7a9e55205..86b8d7af7 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -74,7 +74,11 @@
 </div>
   </div>
 <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>");
+    });
+</script>
 
 <script id="t:test-answer-list" type="text/html">
   <div class="mt10">