diff --git a/app/controllers/graduation_works_controller.rb b/app/controllers/graduation_works_controller.rb
index 3d516b4b1..bc91cf4f7 100644
--- a/app/controllers/graduation_works_controller.rb
+++ b/app/controllers/graduation_works_controller.rb
@@ -1,18 +1,18 @@
 class GraduationWorksController < ApplicationController
   before_action :require_login, :check_auth
   before_action :find_task, only: [:new, :create, :search_member_list, :check_project, :relate_project,
-                                   :cancel_relate_project]
+                                   :cancel_relate_project, :delete_work]
   before_action :find_work, only: [:show, :edit, :update, :revise_attachment, :supply_attachments, :comment_list,
                                    :add_score, :delete_score, :adjust_score, :assign_teacher]
   before_action :user_course_identity
   before_action :task_public
   before_action :teacher_allowed, only: [:add_score, :adjust_score, :assign_teacher]
   before_action :course_student, only: [:new, :create, :edit, :update, :search_member_list, :relate_project,
-                                        :cancel_relate_project]
+                                        :cancel_relate_project, :delete_work]
   before_action :my_work, only: [:edit, :update, :revise_attachment]
   before_action :published_task, only: [:new, :create, :edit, :update, :search_member_list, :relate_project,
                                         :cancel_relate_project, :revise_attachment]
-  before_action :edit_duration, only: [:edit, :update]
+  before_action :edit_duration, only: [:edit, :update, :delete_work]
   before_action :open_work, only: [:show, :supply_attachments, :comment_list]
 
   def new
@@ -47,6 +47,24 @@ class GraduationWorksController < ApplicationController
     @members = @members.page(page).per(limit).includes(:course_group, user: :user_extension)
   end
 
+  def delete_work
+    ActiveRecord::Base.transaction do
+      begin
+        work = @task.graduation_works.find_by!(user_id: params[:user_id])
+        tip_exception("只有组长才能删除组员") if work.commit_user_id != current_user.id
+        work.update_attributes(description: nil, project_id: 0, late_penalty: 0, work_status: 0, commit_time: nil,
+                               update_time: nil, group_id: 0, commit_user_id: nil, final_score: nil, work_score: nil,
+                               teacher_score: nil, teaching_asistant_score: nil, update_user_id: nil)
+        work.attachments.destroy_all
+        work.tidings.destroy_all
+        normal_status("删除成功")
+      rescue Exception => e
+        uid_logger(e.message)
+        tip_exception(e.message)
+      end
+    end
+  end
+
   # 判断项目是否已有其他作品关联上了
   def check_project
     tip_exception("项目id不能为空") if params[:project_id].blank?
diff --git a/config/routes.rb b/config/routes.rb
index af7e0ee3b..e4199edb3 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -539,6 +539,7 @@ Rails.application.routes.draw do
             post 'relate_project'
             get 'cancel_relate_project'
             post 'revise_attachment'
+            delete 'delete_work'
           end
 
           member do