diff --git a/app/controllers/boards_controller.rb b/app/controllers/boards_controller.rb
index 0bcaaa2c0..1081a82ce 100644
--- a/app/controllers/boards_controller.rb
+++ b/app/controllers/boards_controller.rb
@@ -2,10 +2,10 @@ class BoardsController < ApplicationController
   before_action :require_login, :check_auth
   before_action :find_course, only: [:create]
   before_action :set_board, except: [:create]
-  before_action :teacher_allowed
+  before_action :teacher_or_admin_allowed
 
   def index
-    @boards = @course.boards.includes(messages: [:last_reply, :author]);
+    @boards = @course.boards.includes(messages: [:last_reply, :author])
   end
 
   def show
diff --git a/app/controllers/course_modules_controller.rb b/app/controllers/course_modules_controller.rb
index 4e9f7b908..6e8afd525 100644
--- a/app/controllers/course_modules_controller.rb
+++ b/app/controllers/course_modules_controller.rb
@@ -2,7 +2,7 @@ class CourseModulesController < ApplicationController
   before_action :require_login, :check_auth
   before_action :set_module, except: [:unhidden_modules]
   before_action :find_course, only: [:unhidden_modules]
-  before_action :teacher_allowed
+  before_action :teacher_or_admin_allowed
 
   # 模块置顶
   def sticky_module
@@ -16,6 +16,7 @@ class CourseModulesController < ApplicationController
 
   # 模块隐藏
   def hidden_module
+    tip_exception("请至少保留一个课堂模块") if @course.none_hidden_course_modules.where.not(id: @course_module.id).size == 0
     @course_module.update_attributes(hidden: 1)
     normal_status(0, "更新成功")
   end
diff --git a/app/controllers/course_second_categories_controller.rb b/app/controllers/course_second_categories_controller.rb
index ca544a584..af368a8dc 100644
--- a/app/controllers/course_second_categories_controller.rb
+++ b/app/controllers/course_second_categories_controller.rb
@@ -1,7 +1,7 @@
 class CourseSecondCategoriesController < ApplicationController
   before_action :require_login, :check_auth
   before_action :set_category
-  before_action :teacher_allowed
+  before_action :teacher_or_admin_allowed
 
   # 目录重命名
   def rename_category
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 94c8a4ec1..8ea5a7174 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -1057,6 +1057,7 @@ class CoursesController < ApplicationController
     tip_exception("课堂名称应以课程名称开头命名") unless params[:course][:name].index(params[:course_list_name]) &&
         params[:course][:name].index(params[:course_list_name]) == 0
     tip_exception("课堂所属单位不能为空！") if params[:school].blank?
+    tip_exception("请至少添加一个课堂模块") if params[:course_module_types].blank?
     @school = School.find_by!(name: params[:school].strip)
   end