diff --git a/csst_dfs_api_cluster/common/service.py b/csst_dfs_api_cluster/common/service.py
index db2936563bcf55e6f9fc0d951247c0ac75ca67cc..cb0cb5a52a7aca0d22c1f1082440ba4193bcfb25 100644
--- a/csst_dfs_api_cluster/common/service.py
+++ b/csst_dfs_api_cluster/common/service.py
@@ -6,8 +6,8 @@ class ServiceProxy:
         self.gateway = os.getenv("CSST_DFS_GATEWAY",'172.31.248.218:30880')
 
     def channel(self):
-        options = (('grpc.max_send_message_length', 1024 * 1024 * 1024 * 10),
-                    ('grpc.max_receive_message_length', 1024 * 1024 * 1024 * 10))     
+        options = (('grpc.max_send_message_length', 1024 * 1024 * 1024 * 5),
+                    ('grpc.max_receive_message_length', 1024 * 1024 * 1024 * 5))     
         # channel = grpc.insecure_channel(self.gateway, options = options, compression = grpc.Compression.Gzip)
         channel = grpc.insecure_channel(self.gateway, options = options)
         try: