diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 3d6e20ee9..df74cf737 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -172,10 +172,7 @@ class AttachmentsController < ApplicationController
           # 课堂资源、作业、毕设相关资源的权限判断
           if @file.container.is_a?(Course)
             course = @file.container
-            Rails.logger.info("@@@@@@@@@@@@######################## course_id#{course.id}")
-            candown = current_user.member_of_course?(course) || @file.is_public == 1
-            Rails.logger.info("@@@@@@@@@@@@######################## public #{@file.is_public}")
-            Rails.logger.info("@@@@@@@@@@@@#########################{candown}")
+            candown = current_user.member_of_course?(course) || (course.is_public? && @file.publiced?)
           elsif @file.container.is_a?(HomeworkCommon) || @file.container.is_a?(GraduationTask) || @file.container.is_a?(GraduationTopic)
             course = @file.container&.course
             candown = current_user.member_of_course?(course)