diff --git a/app/controllers/graduation_works_controller.rb b/app/controllers/graduation_works_controller.rb
index 1d26a3ed1..63551cd3d 100644
--- a/app/controllers/graduation_works_controller.rb
+++ b/app/controllers/graduation_works_controller.rb
@@ -142,6 +142,7 @@ class GraduationWorksController < ApplicationController
         graduation_work.commit_time = Time.now
         graduation_work.update_time = Time.now
         graduation_work.commit_user_id = current_user.id
+        graduation_work.update_user_id = current_user.id
         graduation_work.course_id = @course.id
         graduation_work.group_id = @task.task_type == 2 ? @task.graduation_works.where("work_status != 0").map(&:group_id).max.to_i + 1 : 0
 
@@ -162,7 +163,7 @@ class GraduationWorksController < ApplicationController
                                          graduation_task_id: @task.id, project_id: graduation_work.project_id,
                                          late_penalty: graduation_work.late_penalty, work_status: graduation_work.work_status,
                                          commit_time: Time.now, update_time: Time.now, group_id: graduation_work.group_id,
-                                         commit_user_id: current_user.id)
+                                         commit_user_id: current_user.id, update_user_id: current_user.id)
               stu_work.save!
               graduation_work.attachments.each do |attachment|
                 att = attachment.copy
@@ -190,8 +191,9 @@ class GraduationWorksController < ApplicationController
   def edit
     @task_user = current_user
     if @task.task_type == 2
+      @commit_user_id = @work.commit_user_id
       @work_members = @course.students.where(user_id: @task.graduation_works.where(group_id: @work.group_id).pluck(:user_id)).
-          order("course_members.id=#{@work.user_id} desc").includes(:course_group, user: :user_extension)
+          order("course_members.id=#{@work.commit_user_id} desc").includes(:course_group, user: :user_extension)
     end
   end
 
@@ -203,7 +205,8 @@ class GraduationWorksController < ApplicationController
       begin
         @work.description = params[:description]
         @work.update_time = Time.now
-        @work.commit_user_id = current_user.id
+        @work.update_user_id = current_user.id
+        # @work.commit_user_id = current_user.id
         if @work.save!
           Attachment.associate_container(params[:attachment_ids], @work.id, @work.class)
 
@@ -217,7 +220,7 @@ class GraduationWorksController < ApplicationController
 
             # 原成员更新描述、更新时间以及附件
             @task.graduation_works.where(group_id: @work.group_id, user_id: (work_user_ids & params_user_ids)).each do |work|
-              work.update_attributes(update_time: Time.now, description: @work.description, commit_user_id: current_user.id)
+              work.update_attributes(update_time: Time.now, description: @work.description, update_user_id: current_user.id)
               work.attachments.destroy_all
               @work.attachments.each do |attachment|
                 att = attachment.copy
@@ -237,7 +240,7 @@ class GraduationWorksController < ApplicationController
             @task.graduation_works.where(group_id: @work.group_id, user_id: delete_user_ids).
                 update_all(work_status: 0, description: nil, late_penalty: 0, commit_time: nil, update_time: nil,
                            final_score: nil, teacher_score: nil, work_score: nil, project_id: 0, group_id: 0,
-                           commit_user_id: nil)
+                           commit_user_id: nil, update_user_id: nil)
 
             # 新增加的成员
             (params_user_ids - work_user_ids).each do |user_id|
@@ -246,7 +249,7 @@ class GraduationWorksController < ApplicationController
               stu_work.update_attributes(user_id: user_id, description: @work.description, graduation_task_id: @task.id,
                                          project_id: @work.project_id, late_penalty: @work.late_penalty,
                                          work_status: @work.work_status, commit_time: Time.now, update_time: Time.now,
-                                         group_id: @work.group_id, commit_user_id: current_user.id)
+                                         group_id: @work.group_id, commit_user_id: @work.commit_user_id, update_user_id: current_user.id)
               @work.attachments.each do |attachment|
                 att = attachment.copy
                 att.author_id = attachment.author_id
diff --git a/app/models/graduation_work.rb b/app/models/graduation_work.rb
index 94c2633ae..89d95300a 100644
--- a/app/models/graduation_work.rb
+++ b/app/models/graduation_work.rb
@@ -6,6 +6,7 @@ class GraduationWork < ApplicationRecord
   belongs_to :graduation_task, optional: true
 
   belongs_to :commit_user, class_name: 'User', foreign_key: :commit_user_id, optional: true
+  belongs_to :update_user, class_name: 'User', foreign_key: :update_user_id, optional: true
   has_many :attachments, as: :container, dependent: :destroy
   has_many :tidings, as: :container, dependent: :destroy
   has_many :graduation_work_scores, dependent: :destroy
diff --git a/app/views/graduation_works/edit.json.jbuilder b/app/views/graduation_works/edit.json.jbuilder
index 254579473..718e2f4f7 100644
--- a/app/views/graduation_works/edit.json.jbuilder
+++ b/app/views/graduation_works/edit.json.jbuilder
@@ -10,9 +10,13 @@ json.attachments @work.attachments do |atta|
   json.partial! "attachments/attachment_simple", locals: {attachment: atta, delete: @work.delete_atta(atta)}
 end
 
-json.members @work_members do |member|
-  json.user_id member.user_id
-  json.user_name member.user.real_name
-  json.group_name member.course_group_name
-  json.student_id member.user.student_id
+if @task.task_type == 2
+  json.is_leader_work @work.user_id == @commit_user_id
+  json.members @work_members do |member|
+    json.is_leader_work @work.user_id == @commit_user_id
+    json.user_name member.user.real_name
+    json.group_name member.course_group_name
+    json.student_id member.user.student_id
+    json.is_leader member.user_id == @commit_user_id
+  end
 end
\ No newline at end of file
diff --git a/app/views/graduation_works/show.json.jbuilder b/app/views/graduation_works/show.json.jbuilder
index efe0f52cc..669adfbe9 100644
--- a/app/views/graduation_works/show.json.jbuilder
+++ b/app/views/graduation_works/show.json.jbuilder
@@ -2,9 +2,12 @@ json.partial! "graduation_tasks/public_navigation", locals: {course: @course, gr
 json.task_type @task.task_type
 json.(@work, :description, :commit_time, :update_time)
 
+json.is_leader_work @work.user_id == @work.commit_user_id if @task.task_type == 2
+
 json.author_name @work.user.real_name
 json.is_author @is_author
-json.update_user_name @work.commit_user.try(:real_name)
+json.commit_user_name @work.commit_user.try(:real_name)
+json.update_user_name @work.update_user.try(:real_name)
 json.task_status @task.status    #6.12 -hs
 json.status task_curr_status(@task, @course)[:status]
 json.update_atta (!@course.is_end && @task.end_time < Time.now && @task.allow_late && (@task.late_time.nil? || @task.late_time > Time.now) && @is_author)
@@ -17,9 +20,11 @@ if @task.task_type == 2 && @task.base_on_project
   json.project_info project_info @work, @current_user, @user_course_identity
 end
 
-json.work_members @work_members.each do |member|
-  json.user_name member.user.real_name
-  json.user_login member.user.login
+json.work_members @work_members.each do |work|
+  json.user_name work.user.real_name
+  json.user_login work.user.login
+  json.work_id work.id
+  json.is_leader work.user_id == work.commit_user_id
 end
 
 
diff --git a/db/migrate/20190923094220_add_update_user_id_to_graduation_works.rb b/db/migrate/20190923094220_add_update_user_id_to_graduation_works.rb
new file mode 100644
index 000000000..718c6adde
--- /dev/null
+++ b/db/migrate/20190923094220_add_update_user_id_to_graduation_works.rb
@@ -0,0 +1,6 @@
+class AddUpdateUserIdToGraduationWorks < ActiveRecord::Migration[5.2]
+  def change
+    add_column :graduation_works, :update_user_id, :integer
+    GraduationWork.update_all("update_user_id = commit_user_id")
+  end
+end