diff --git a/handler/ad.py b/handler/ad.py
index 3eb9550..8cde87d 100644
--- a/handler/ad.py
+++ b/handler/ad.py
@@ -19,7 +19,7 @@ from mysql.mmysql import MysqlBase
 from prod_config import mysql_promotion_config
 import datetime
 import pdb
-
+import time
 log = logging.getLogger(__name__)
 
 parser = reqparse.RequestParser()
@@ -207,6 +207,7 @@ class Ad(Resource):
 			if data:
 				condition = f"id='{self.args['id']}'"
 				self.mydb.update("ad", ad, condition)
+				time.sleep(5)
 				if rebuild_ad():
 					log.info(f"rebuild cache via ad change!")
 					return jsonify({'code': 200, 'message': 'update adid={id} success!'})