diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index b937d293d..1cee38816 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -62,13 +62,13 @@ class CoursesController < ApplicationController
     if @order == "mine"
       tip_exception(401, "..") unless current_user.logged?
       @courses = Course.joins(:course_members)
-                       .where("is_delete = 0 AND is_hidden = 0 AND course_members.user_id = ?", @user.id)
+                       .where("is_delete = 0 AND is_hidden = 0 AND course_members.user_id = ?", @user.id).distinct
     elsif @order == "created_at"
       # REDO:Extension
-      @courses = Course.where(is_delete: 0, is_hidden: 0, is_end: 0)
+      @courses = Course.where(is_delete: 0, is_hidden: 0, is_end: 0).distinct
     else
       # REDO:Extension
-      @courses = Course.where(is_delete: 0, is_hidden: 0)
+      @courses = Course.where(is_delete: 0, is_hidden: 0).distinct
     end
 
     # 根据搜索关键字进一步筛选
diff --git a/app/controllers/graduation_tasks_controller.rb b/app/controllers/graduation_tasks_controller.rb
index 6bf3d2f8a..ab99e8d86 100644
--- a/app/controllers/graduation_tasks_controller.rb
+++ b/app/controllers/graduation_tasks_controller.rb
@@ -156,7 +156,7 @@ class GraduationTasksController < ApplicationController
               }
             end
           else
-            tip_exception(status == -2 ? "500M" : "无附件可下载")
+            normal_status(status,status == -2 ? "500M" : "无附件可下载")
           end
         end
       end
diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 052db3e4f..8fab8dad3 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -228,7 +228,7 @@ class HomeworkCommonsController < ApplicationController
               }
             end
           else
-            tip_exception(status == -2 ? "500M" : "无附件可下载")
+            normal_status(status, status == -2 ? "500M" : "无附件可下载")
           end
         end
       end
diff --git a/app/views/users/courses/shared/_course.json.jbuilder b/app/views/users/courses/shared/_course.json.jbuilder
index 629f47264..e917033da 100644
--- a/app/views/users/courses/shared/_course.json.jbuilder
+++ b/app/views/users/courses/shared/_course.json.jbuilder
@@ -1,7 +1,9 @@
 json.id course.id
 json.name course.name
-json.members_count course.members_count
-json.homework_commons_count course.homework_commons_count
+# json.members_count course.members_count
+json.members_count course.course_members_count
+# json.homework_commons_count course.homework_commons_count
+json.homework_commons_count get_tasks_count course
 json.attachments_count course.attachments.count
 
 json.first_category_url module_url(course.course_modules.where(hidden: 0).order(position: :desc).first, course)