diff --git a/app/controllers/bids_controller.rb b/app/controllers/bids_controller.rb
index c98df27d3..35236414f 100644
--- a/app/controllers/bids_controller.rb
+++ b/app/controllers/bids_controller.rb
@@ -675,11 +675,12 @@ class BidsController < ApplicationController
   #删除作业
   #by xianbo
   def homework_destroy
-    @bid_to_destroy = Bid.find params[:course_id]
+    @bid_to_destroy = Bid.find params[:id]
+    course_url = course_homework_path(@bid_to_destroy.courses.first)
     (render_403; return false) unless User.current.admin?||User.current.id==@bid_to_destroy.author_id
     @bid_to_destroy.destroy
     respond_to do |format|
-      format.html { redirect_to :back }
+      format.html { redirect_to course_url }
       format.js
       #format.api { render_api_ok }
     end
diff --git a/app/views/courses/homework.html.erb b/app/views/courses/homework.html.erb
index f7cf2a360..7b74351cd 100644
--- a/app/views/courses/homework.html.erb
+++ b/app/views/courses/homework.html.erb
@@ -21,6 +21,9 @@
         <p class="fl "><%= l(:lebel_homework_commit)%> ( <%= link_to bid.homeworks.count, course_for_bid_path(bid.id), :class => 'c_red'%> )</p>
         <% if @is_teacher%>
             <%= bid_anonymous_comment(bid)%>
+            <% if bid.homeworks.empty? %>
+            <%= link_to(l(:button_delete),bids_homework_path(:id => bid.id), :method => :delete, :confirm => l(:label_delete_confirm), :class => "fr mr10 work_edit") %>
+            <% end %>
             <%= link_to(l(:button_edit),edit_bid_path(:course_id =>@course.id, :bid_id => bid.id), :class => "fr mr10 work_edit") %>
         <% elsif @is_student%>
             <%= student_anonymous_comment bid %>
@@ -59,4 +62,4 @@
 <ul class="wlist">
   <%= pagination_links_full @obj_pages, @obj_count, :per_page_links => false, :remote => false, :flag => true%>
 </ul>
-<div class="cl"></div>
\ No newline at end of file
+<div class="cl"></div>
diff --git a/app/views/users/user_homeworks.html.erb b/app/views/users/user_homeworks.html.erb
index 06c67320a..74560909d 100644
--- a/app/views/users/user_homeworks.html.erb
+++ b/app/views/users/user_homeworks.html.erb
@@ -1,4 +1,4 @@
-<!-- added by fq -->
+<!-- added by fq -->u
 <!--huang-->
 	<% if @user.user_extensions.identity == 0  %>	
 	<%= render :partial => 'my_create_homework' %>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 09897c1eb..8419ae188 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -759,6 +759,7 @@ en:
   button_create_and_continue: Create and continue
   button_test: Test
   button_edit: Edit
+  button_delete: Delete
   button_edit_associated_wikipage: "Edit associated Wiki page: %{page_title}"
   button_add: Add
   button_change: Change
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 4c752660a..73a97c035 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -849,6 +849,7 @@ zh:
   button_create_and_continue: 创建并继续
   button_test: 测试
   button_edit: 编辑
+  button_delete: 删除
   button_edit_associated_wikipage: "编辑相关wiki页面: %{page_title}"
   button_add: 新增
   button_change: 修改
diff --git a/config/routes.rb b/config/routes.rb
index 411386afc..9a8e71156 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -251,7 +251,7 @@ RedmineApp::Application.routes.draw do
   post 'boards/:board_id/topics/:id/edit', :to => 'messages#edit'
   post 'boards/:board_id/topics/:id/destroy', :to => 'messages#destroy'
   # boards end
-  post 'bids/homework_destroy', :to => 'bids#homework_destroy'
+  delete 'bids/homework', :to => 'bids#homework_destroy'
 
   # Misc issue routes. TODO: move into resources
   match '/issues/auto_complete', :to => 'auto_completes#issues', :via => :get, :as => 'auto_complete_issues'
diff --git a/spec/requests/homework_request_spec.rb b/spec/requests/homework_request_spec.rb
new file mode 100644
index 000000000..05733a56d
--- /dev/null
+++ b/spec/requests/homework_request_spec.rb
@@ -0,0 +1,52 @@
+require 'rails_helper'
+require 'shared_account_spec'
+
+RSpec.describe "homework", type: :request do
+  include_context "create user"
+  let(:course) {FactoryGirl.create(:course, teacher: current_user)}
+  let(:homework){FactoryGirl.attributes_for(:homework)}
+
+  before {
+    shared_register
+  }
+  describe "创建作业" do
+    before do 
+      post calls_create_homework_path(course_id: course.id), {
+                bid: homework
+      }
+      @homework = assigns(:bid) 
+    end
+    it "参数正确，可以成功创建作业" do
+      expect(response).to redirect_to(course_homework_url(course.id))
+    end
+    it {expect(course.homeworks).to_not be_empty}
+    it {expect(@homework.acts).to_not be_empty}
+    it {expect(@homework.watchers).to_not be_empty}
+    it {expect(@homework.attachments).to_not be_empty}
+  end
+
+  describe "删除作业" do
+    before do
+      shared_login
+      post calls_create_homework_path(course_id: course.id), {
+                bid: homework
+      }
+      @homework = assigns(:bid)
+      delete bids_homework_path(id: @homework.id)
+    end
+    it{expect(response).to redirect_to(course_homework_path(course.id))}
+    it "homework_for_courses应删除" do
+      expect(course.homeworks).to be_empty
+    end
+    it "相关活动也删除" do
+      expect(@homework.acts).to be_empty
+    end
+    it "watches 删除" do
+      expect(@homework.watchers).to be_empty
+    end
+    it "附件 删除" do
+      expect(@homework.attachments).to be_empty
+    end
+  end
+
+end