diff --git a/DB.py b/DB.py
index 78b9266..47fc7a2 100644
--- a/DB.py
+++ b/DB.py
@@ -671,13 +671,6 @@ class DBVidcon:
         # 如果你存入的是 JSON 字符串，可以在这里做一次反序列化：
         return json.loads(item) if item is not None else None
 
-import time
-import threading
-import copy
-from datetime import datetime
-from sqlalchemy.dialects.mysql import insert as mysql_insert
-from app import _engine, logger
-from app.models import video, video_op, video_author
 
 class DBSA:
     FLUSH_EVERY_ROWS = 100