diff --git a/app/controllers/bids_controller.rb b/app/controllers/bids_controller.rb
index b8efab33e..2997f4205 100644
--- a/app/controllers/bids_controller.rb
+++ b/app/controllers/bids_controller.rb
@@ -842,7 +842,7 @@ class BidsController < ApplicationController
   # 编辑作业
  def edit
    @bid = Bid.find(params[:bid_id])
-   if (User.current.admin?||User.current.id==@bid.author_id)
+   if (User.current.admin?||User.current.allowed_to?(:as_teacher,@bid.courses.first))
      @course_id = params[:course_id]
     respond_to do |format|
       format.html {
@@ -884,6 +884,7 @@ class BidsController < ApplicationController
   def new_submit_homework
     #render html to prepare create submit homework
     find_bid
+    find_bid
     render :layout => 'base_homework'
   end