diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 7121defa1..7cd4da414 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -27,7 +27,7 @@
 
     <div class="mt10">
       <!--<input type="text" class="InputBox  W700 SearchIcon" placeholder="发送到课程" />-->
-      <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox  w708"} %>
+      <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox  w708",:value => "请选择发布作业的课程"} %>
     </div>
     <div class="cl"></div>