diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index fa1d06d77..159650c38 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -13,7 +13,7 @@ class CoursesController < ApplicationController
 
   before_action :require_login, except: [:index, :show, :students, :teachers, :board_list, :mine, :all_course_groups, :left_banner, :top_banner]
   before_action :set_course, :user_course_identity, only: [:show, :update, :destroy, :settings, :set_invite_code_halt,
-                                                           :set_public_or_private, :search_teacher_candidate, :teachers,
+                                                           :set_public_or_private, :search_teacher_candidate, :teachers, :apply_teachers,
                                                            :top_banner, :left_banner, :add_teacher_popup, :add_teacher,
                                                            :graduation_group_list, :create_graduation_group, :join_graduation_group,
                                                            :course_group_list, :set_course_group, :change_course_admin, :change_course_teacher,
@@ -26,10 +26,10 @@ class CoursesController < ApplicationController
                                          :transfer_to_course_group, :delete_from_course,
                                          :search_users, :add_students_by_search, :get_historical_courses, :add_teacher_popup, :add_teacher]
   before_action :admin_allowed, only: [:set_invite_code_halt, :set_public_or_private, :change_course_admin,
-                                       :set_course_group, :delete_course_teacher, :teacher_application_review,
-                                       :create_group_by_importing_file]
+                                       :set_course_group, :delete_course_teacher, :create_group_by_importing_file]
   before_action :teacher_or_admin_allowed, only: [:graduation_group_list, :create_graduation_group, :join_graduation_group,
-                                                  :change_course_teacher, :export_member_scores_excel, :course_group_list]
+                                                  :change_course_teacher, :export_member_scores_excel, :course_group_list,
+                                                  :teacher_application_review, :apply_teachers]
   before_action :validate_course_name, only: [:create, :update]
   before_action :find_board, only: :board_list
   before_action :validate_page_size, only: :mine
@@ -251,46 +251,52 @@ class CoursesController < ApplicationController
 
     if @course.try(:id) != 1309 || current_user.admin? || current_user.try(:id) == 15582
       @teacher_list = @course.course_members.joins(:user).where("course_members.role in (1, 2, 3)
-                                                     and LOWER(concat(users.lastname, users.firstname)) LIKE '%#{@search_str}%'")
+                                                     and LOWER(concat(users.lastname, users.firstname)) LIKE ?", "%#{@search_str}%")
     else
       @teacher_list = @course.course_members.joins(:user).where("(course_members.role in (1, 3) or (course_members.user_id = #{current_user.id}
                                           and course_members.role = 2)) and LOWER(concat(users.lastname, users.firstname))
-                                          LIKE '%#{@search_str}%'")
+                                          LIKE ?", "%#{@search_str}%")
     end
 
     @teacher_list_size = @teacher_list.size
 
     @has_graduation_design = @course.course_modules.graduation_module_not_hidden.any?
 
+    sort = params[:sort] || "desc"
     @order = params[:order].to_i
     if @order.present?
       case @order
       when 1
-        @teacher_list = @teacher_list.includes(:user).order("CONVERT(CONCAT(users.lastname, users.firstname) USING gbk) COLLATE gbk_chinese_ci asc")
+        @teacher_list = @teacher_list.order("role #{sort}")
       when 2
-        @teacher_list = @teacher_list.order("created_at")
+        @teacher_list = @teacher_list.includes(:user).order("CONVERT(CONCAT(users.lastname, users.firstname) USING gbk) COLLATE gbk_chinese_ci #{sort}")
       when 3
-        @teacher_list = @teacher_list.includes(:course, :graduation_group).order("graduation_groups.name")
+        @teacher_list = @teacher_list.includes(:course, :graduation_group).order("graduation_groups.name #{sort}")
       else
-        @teacher_list = @teacher_list.order("created_at")
+        @teacher_list = @teacher_list.order("role #{sort}")
       end
     else
-      if @has_graduation_design
-        @teacher_list = @teacher_list.includes(:course, :graduation_group).order("graduation_groups.name")
-      else
-        @teacher_list = @teacher_list.order("created_at")
-      end
+      @teacher_list = @teacher_list.order("role #{sort}")
     end
 
     @is_admin = @user_course_identity < Course::PROFESSOR
 
-    @applications = @is_admin ? CourseMessage.unhandled_join_course_requests_by_course(@course) : CourseMessage.none
+    @applications_size = CourseMessage.unhandled_join_course_requests_by_course(@course).size
 
     page = params[:page] || 1
     limit = params[:limit] || 20
     @teacher_list = @teacher_list.page(page).per(limit)
   end
 
+  def apply_teachers
+    search_str = params[:search].present? ? params[:search].strip : ""
+    @applications = CourseMessage.unhandled_join_course_requests_by_course(@course).joins(:user).
+        where("LOWER(concat(users.lastname, users.firstname)) LIKE ?", "%#{search_str}%")
+    @teacher_list_size = @course.teachers.size
+    @applications_size = CourseMessage.unhandled_join_course_requests_by_course(@course).size
+    @is_admin = @user_course_identity < Course::PROFESSOR
+  end
+
   # 打开添加教师或助教弹窗时访问的接口(需要返回该课堂所有答辩组和所有)
   def add_teacher_popup
     @graduation_groups = @course.graduation_groups
@@ -577,6 +583,18 @@ class CoursesController < ApplicationController
           end
 
           new_teacher.save!
+
+          # 课堂管理员才有分配权限，且课堂分班数大于0
+          if @user_course_identity < Course::PROFESSOR && @course.course_groups_count > 0 && params[:group_id] && params[:group_id].size > 0
+            # 分班全选则是不限，不需要做处理
+            unless @course.course_groups.where(id: params[:group_id]).size == @course.course_groups_count
+              @course.course_groups.where(id: params[:group_id]).each do |group|
+                unless TeacherCourseGroup.where(course_id: @course.id, user_id: applier_user.id, course_group_id: group.id, course_member_id: new_teacher.id).exists?
+                  TeacherCourseGroup.create(course_id: @course.id, user_id: applier_user.id, course_member_id: new_teacher.id, course_group_id: group.id)
+                end
+              end
+            end
+          end
         elsif approval == 2
           course_message.reject!
         else
diff --git a/app/views/courses/apply_teachers.json.jbuilder b/app/views/courses/apply_teachers.json.jbuilder
new file mode 100644
index 000000000..aee0803b4
--- /dev/null
+++ b/app/views/courses/apply_teachers.json.jbuilder
@@ -0,0 +1,13 @@
+json.teacher_list_size @teacher_list_size
+json.apply_size @applications_size
+json.is_admin @is_admin
+json.application_list do
+  json.array! @applications do |application|
+    json.application_id application.id
+    json.user_id application.course_message_id
+    json.name application.application_user.real_name
+    json.name_link user_path(application.application_user)
+    json.login application.application_user.login
+    json.role application.content.to_i == 3 || application.content.to_i == 7 ? "助教" : application.content.to_i == 2 || application.content.to_i == 9 ? "教师" : ""
+  end
+end
\ No newline at end of file
diff --git a/app/views/courses/teachers.json.jbuilder b/app/views/courses/teachers.json.jbuilder
index 1be1ce16c..6a8505964 100644
--- a/app/views/courses/teachers.json.jbuilder
+++ b/app/views/courses/teachers.json.jbuilder
@@ -17,14 +17,5 @@ json.teacher_list do
   end
 end
 json.teacher_list_size @teacher_list_size
-json.application_list do
-  json.array! @applications do |application|
-    json.application_id application.id
-    json.user_id application.course_message_id
-    json.name application.application_user.real_name
-    json.name_link user_path(application.application_user)
-    json.login application.application_user.login
-    json.role application.content.to_i == 3 || application.content.to_i == 7 ? "助教" : application.content.to_i == 2 || application.content.to_i == 9 ? "教师" : ""
-  end
-end
-json.is_admin @is_admin
+json.apply_size @applications_size
+json.is_admin @is_admin
\ No newline at end of file