diff --git a/utils/updateObs.py b/utils/updateObs.py
index bb464ef..aee7a6a 100644
--- a/utils/updateObs.py
+++ b/utils/updateObs.py
@@ -1,4 +1,5 @@
 from obs import ObsClient
+import obs
 from datetime import datetime
 #from config import cfg
 from utils.config import cfg
@@ -12,6 +13,8 @@ obsClient = ObsClient(
     server='https://obs.cn-east-3.myhuaweicloud.com'
 )
 bucketName = 'ieemoo-ai'
+headers = obs.SetObjectMetadataHeader()
+headers.cacheControl = "no-cache"
 
 def AddObs(file_path, status):
     with lock:
@@ -52,7 +55,7 @@ def addobs(file_path, status): #save videos
     time = os.path.basename(file_path).split('-')[0]
     if objectkey.split('.')[-1] in ['avi','mp4']:
         objectkey = 'videos/'+time+'/'+status+'/'+status+'_'+objectkey
-        resp = obsClient.putFile(bucketName, objectkey, file_path)
+        resp = obsClient.putFile(bucketName, objectkey, file_path, hearders=headers)
     #os.remove(file_path)
 
 def updateAgain():
@@ -70,7 +73,7 @@ def updateAgain():
             time = os.path.basename(file_path).split('-')[0]
             if objectkey.split('.')[-1] in ['avi','mp4']:
                 objectkey = 'videos/'+time+'/'+status+'/'+status+'_'+objectkey
-                resp = obsClient.putFile(bucketName, objectkey, file_path)
+                resp = obsClient.putFile(bucketName, objectkey, file_path, hearders=headers)
             os.remove(file_path)
     except Exception as e:
         pass
@@ -83,14 +86,14 @@ def Addimg(uuid_barcode):
         file_path = os.sep.join([cfg.Tempimg, '3_'+uuid_barcode+'.jpg'])
     if not os.path.exists(file_path):
         file_path = os.sep.join([cfg.Tempimg, 'ex_'+uuid_barcode+'.jpg'])
-    resp = obsClient.putFile(bucketName, objectkey, file_path)
+    resp = obsClient.putFile(bucketName, objectkey, file_path, hearders=headers)
 
 def Addimg_content(uuid_barcode, context):
     success, encoded_image = cv2.imencode(".jpg",context)
     context = encoded_image.tobytes()
     time = uuid_barcode.split('-')[0]
     objectkey = 'imgs/'+time+'/'+uuid_barcode+'.jpg'
-    resp = obsClient.putContent(bucketName, objectkey, context)
+    resp = obsClient.putContent(bucketName, objectkey, context, hearders=headers)
 
 if __name__ == '__main__':
     import cv2