diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 8d2c3579a..638df8007 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -102,8 +102,13 @@ class CoursesController < ApplicationController
   end
 
   def course_videos
-    logger.info("########[#{@course}")
     videos = @course.videos
+    if params[:category_id].present? && params[:category_id].to_i != 0
+      videos = videos.where(course_second_category_id: params[:category_id].to_i)
+    end
+    @category = @main_category.course_second_categories.find_by(id: params[:category])
+    tip_exception("子目录id有误") if !@category.present?
+
     videos = custom_sort(videos, params[:sort_by], params[:sort_direction])
     @count  = videos.count
     @videos = paginate videos.includes(user: :user_extension)
diff --git a/app/helpers/courses_helper.rb b/app/helpers/courses_helper.rb
index 8eb608a24..e9d6e4b06 100644
--- a/app/helpers/courses_helper.rb
+++ b/app/helpers/courses_helper.rb
@@ -80,7 +80,7 @@ module CoursesHelper
     when "statistics"
       "/courses/#{course.id}/statistics"
     when "video"
-      "/courses/#{course.id}/course_videos/#{mod.id}"
+      "/courses/#{course.id}/course_videos"
     end
   end