diff --git a/app/controllers/weapps/courses_controller.rb b/app/controllers/weapps/courses_controller.rb
index 357b2a503..97e9884b8 100644
--- a/app/controllers/weapps/courses_controller.rb
+++ b/app/controllers/weapps/courses_controller.rb
@@ -1,8 +1,8 @@
 class Weapps::CoursesController < Weapps::BaseController
   before_action :require_login
-  before_action :set_course, except: [:create]
-  before_action :user_course_identity, except: [:basic_info, :create]
-  before_action :check_account, only: [:create]
+  before_action :set_course, except: [:create, :check_invite_code]
+  before_action :user_course_identity, except: [:basic_info, :create, :check_invite_code]
+  before_action :check_account, only: [:create, :check_invite_code]
   before_action :teacher_allowed, only: [:edit, :update]
   before_action :teacher_or_admin_allowed, only: [:change_member_roles, :delete_course_teachers]
 
@@ -38,6 +38,23 @@ class Weapps::CoursesController < Weapps::BaseController
     @categories = current_course.shixun_course_modules.first&.course_second_categories
   end
 
+  def check_invite_code
+    tip_exception(-1, "邀请码不能为空") if params[:invite_code].blank?
+    invite_code = params[:invite_code]
+    course = Course.find_by(invite_code: invite_code, is_delete: 0, invite_code_halt: 0)
+    course_group = CourseGroup.find_by(invite_code: invite_code)
+    if course.blank?
+      tip_exception(-1, "邀请码无效") if course_group.blank?
+
+      course = Course.find_by(id: course_group.course_id, is_delete: 0, invite_code_halt: 0)
+      tip_exception(-1, "邀请码无效") if course.blank?
+    end
+
+    tip_exception(-1, "课堂已结束，无法加入") if course.is_end
+
+    render_ok
+  end
+
   # 教师列表
   def teachers
     @course = current_course
diff --git a/config/routes.rb b/config/routes.rb
index 9eef49bfc..d5c4a1d2e 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1043,6 +1043,10 @@ Rails.application.routes.draw do
           get :course_groups
           get :basic_info
         end
+
+        collection do
+          get :check_invite_code
+        end
       end
 
       resources :homework_commons do