diff --git a/Html/apps/services/course_service.py b/Html/apps/services/course_service.py
index 169c8d3..f5f5f6a 100644
--- a/Html/apps/services/course_service.py
+++ b/Html/apps/services/course_service.py
@@ -8,9 +8,6 @@ from urllib.parse import urlparse
 from datetime import datetime
 from bson import ObjectId
 
-from services.cos_service import upload_file, delete_file
-
-from models.material import Material
 
 from .course_services.material_process import *