diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 12f56146f..38472c0d3 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -11,8 +11,10 @@ class CoursesController < ApplicationController
     render_error(ex.model.errors.full_messages.join(','))
   end
 
-  before_action :require_login, :check_auth, except: [:index, :show, :students, :teachers, :board_list, :mine, :all_course_groups,
+  before_action :require_login, except: [:index, :show, :students, :teachers, :board_list, :mine, :all_course_groups,
                                                       :left_banner, :top_banner, :apply_to_join_course]
+  before_action :check_auth, 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, :apply_teachers,
                                                            :top_banner, :left_banner, :add_teacher_popup, :add_teacher,