diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index 119226c87..6fbba1c3d 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -263,7 +263,6 @@ class PollsController < ApplicationController
                if g_course.map(&:to_i).sort == user_course_groups.sort   #  如果是设置为全部班级，则问卷不用分组，且问卷设定为统一设置,否则则分组设置
                  poll.poll_group_settings.destroy_all
                  poll_unified = true
-                 notify_student_ids = @course.students.pluck(:user_id)
                else
                  poll_unified = false
                  g_course.each do |i|
@@ -282,13 +281,11 @@ class PollsController < ApplicationController
                      new_poll_group.save
                    end
                  end
-
-                 notify_student_ids = @course.students.where(course_group_id: params[:group_ids]).pluck(:user_id)
+                 group_ids = params[:group_ids]
                end
             else
               poll.poll_group_settings.destroy_all
               poll_unified = true
-              notify_student_ids = @course.students.pluck(:user_id)
             end
             if poll.end_time.blank?
               e_time = ex_end_time
@@ -309,7 +306,7 @@ class PollsController < ApplicationController
             if poll.course_acts.size == 0
               poll.course_acts << CourseActivity.new(:user_id => poll.user_id,:course_id => poll.course_id)
             end
-            PollPublishNotifyJob.perform_later(poll.id, notify_student_ids)
+            PollPublishNotifyJob.perform_later(poll.id, group_ids)
           end
         end
         normal_status(0, "问卷发布成功！")
diff --git a/app/helpers/student_works_helper.rb b/app/helpers/student_works_helper.rb
index 17cdd41a7..a7103b4bf 100644
--- a/app/helpers/student_works_helper.rb
+++ b/app/helpers/student_works_helper.rb
@@ -145,7 +145,7 @@ module StudentWorksHelper
     else
       user_name = message_user.real_name
       user_login = message_user.login
-      image_url = url_to_avatar(score.user)
+      image_url = url_to_avatar(message_user)
     end
     {user_name: user_name, user_login: user_login, user_image_url: image_url}
   end
diff --git a/app/jobs/poll_publish_notify_job.rb b/app/jobs/poll_publish_notify_job.rb
index bc31957e0..d7ed1ae02 100644
--- a/app/jobs/poll_publish_notify_job.rb
+++ b/app/jobs/poll_publish_notify_job.rb
@@ -2,10 +2,20 @@
 class PollPublishNotifyJob < ApplicationJob
   queue_as :notify
 
-  def perform(poll_id, receiver_ids)
+  def perform(poll_id, group_ids)
     poll = Poll.find_by(id: poll_id)
     return if poll.blank?
     user = poll.user
+    course = poll.course
+
+    if group_ids.present?
+      students = course.students.where(course_group_id: group_ids)
+      subquery = course.teacher_course_groups.where(course_group_id: group_ids).select(:course_member_id)
+      teachers = course.teachers.where(id: subquery)
+    else
+      students = course.students
+      teachers = course.teachers
+    end
 
     attrs = %i[
       user_id trigger_user_id container_id container_type parent_container_id parent_container_type
@@ -19,14 +29,14 @@ class PollPublishNotifyJob < ApplicationJob
       viewed: 0, tiding_type: 'Poll'
     }
     Tiding.bulk_insert(*attrs) do |worker|
-      teacher_ids = poll.course.teachers.pluck(:user_id)
+      teacher_ids = teachers.pluck(:user_id)
       unless poll.tidings.exists?(parent_container_type: 'PollPublish', user_id: teacher_ids)
         poll.course.teachers.find_each do |teacher|
           worker.add same_attrs.merge(user_id: teacher.user_id)
         end
       end
 
-      receiver_ids.each do |user_id|
+      students.pluck(:user_id).each do |user_id|
         worker.add same_attrs.merge(user_id: user_id)
       end
     end
diff --git a/lib/tasks/graduation_task.rake b/lib/tasks/graduation_task.rake
index 0d4dff237..58f7764d0 100644
--- a/lib/tasks/graduation_task.rake
+++ b/lib/tasks/graduation_task.rake
@@ -7,7 +7,7 @@ namespace :graduation_task do
       task.update_attributes(status: 1)
       GraduationTaskPublishNotifyJob.perform_later(task.id)
 
-      task.course_acts << CourseActivity.new(user_id: task.user_id, course_id: task.course_id) if task.course_acts.exists?
+      task.course_acts << CourseActivity.new(user_id: task.user_id, course_id: task.course_id) if !task.course_acts.exists?
     end
   end
 
diff --git a/lib/tasks/homework_publishtime.rake b/lib/tasks/homework_publishtime.rake
index 4c27f0317..7ee2a4a07 100644
--- a/lib/tasks/homework_publishtime.rake
+++ b/lib/tasks/homework_publishtime.rake
@@ -45,7 +45,7 @@ namespace :homework_publishtime do
         end
       end
 
-      homework.course_acts << CourseActivity.new(user_id: homework.user_id, course_id: homework.course_id) if homework.course_acts.exists?
+      homework.course_acts << CourseActivity.new(user_id: homework.user_id, course_id: homework.course_id) if !homework.course_acts.exists?
     end
 
     # 分组设置发布时间的作业
@@ -54,7 +54,7 @@ namespace :homework_publishtime do
       homework = homework_group.homework_common
       if homework.present?
         HomeworkPublishUpdateWorkStatusJob.perform_now([homework_group.id], homework.id)
-        HomeworkCommonPushNotifyJob.perform_later(homework.id, [homework_group.id])
+        HomeworkCommonPushNotifyJob.perform_later(homework.id, [homework_group.course_group_id])
       end
     end
     Rails.logger.info("log--------------------------------homework_publish end")
diff --git a/lib/tasks/poll_publish.rake b/lib/tasks/poll_publish.rake
index 6ced88908..8cec43565 100644
--- a/lib/tasks/poll_publish.rake
+++ b/lib/tasks/poll_publish.rake
@@ -9,39 +9,22 @@ namespace :poll_publish do
     polls = Poll.includes(:poll_users).where("publish_time is not null and polls_status = 1 and publish_time <=?",Time.now)
     polls.each do |poll|
       poll.update_attributes(:polls_status => 2)
-      course = poll.course
-      tid_str = ""
-      course.teachers.find_each do |member|
-        tid_str += "," if tid_str != ""
-        tid_str += "(#{member.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-      end
       if poll.unified_setting
-        course.students.find_each do |student|
+        PollPublishNotifyJob.perform_later(poll.id, nil)
+      else
+        course = poll.course
+        teachers = course.teachers.where.not(id: course.teacher_course_groups.select(:course_member_id))
+        tid_str = ""
+        teachers.find_each do |member|
           tid_str += "," if tid_str != ""
-          tid_str += "(#{student.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-        end
-      end
-      if tid_str != ""
-        tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
-        ActiveRecord::Base.connection.execute tid_sql
-      end
-
-      if poll.poll_users.count == 0
-        str = ""
-        course.students.find_each do |student|
-          str += "," if str != ""
-          str += "(#{student.user_id},#{poll.id}, 0, '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
+          tid_str += "(#{member.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
         end
-
-        if str != ""
-          sql = "insert into poll_users (user_id, poll_id, commit_status, created_at, updated_at) values" + str
-          ActiveRecord::Base.connection.execute sql
+        if tid_str != ""
+          tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
+          ActiveRecord::Base.connection.execute tid_sql
         end
       end
-
-      if poll.course_acts.size == 0
-        poll.course_acts << CourseActivity.new(:user_id => poll.user_id,:course_id => poll.course_id)
-      end
+      poll.course_acts << CourseActivity.new(user_id: poll.user_id, course_id: poll.course_id) if !poll.course_acts.exists?
     end
 
     # 分组设置发布时间的问卷
@@ -49,19 +32,8 @@ namespace :poll_publish do
     poll_group_settings.each do |poll_group|
       poll = poll_group.poll
       if poll.present?
-        course = poll.course
         poll.update_attributes(:polls_status => 2) if poll.polls_status == 1
-
-        tid_str = ""
-        members = course.course_members.where(:course_group_id => poll_group.course_group_id)
-        members.find_each do |member|
-          tid_str += "," if tid_str != ""
-          tid_str += "(#{member.user_id},#{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-        end
-        if tid_str != ""
-          tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
-          ActiveRecord::Base.connection.execute tid_sql
-        end
+        PollPublishNotifyJob.perform_later(poll.id, [poll_group.course_group_id])
       end
     end