diff --git a/opengemini_client/models.py b/opengemini_client/models.py
index dd7b576..1faa75f 100644
--- a/opengemini_client/models.py
+++ b/opengemini_client/models.py
@@ -34,11 +34,11 @@ class BatchConfig:
 @dataclass
 class Config:
     address: List[Address]
-    batch_config: BatchConfig
-    timeout: timedelta
-    connection_timeout: timedelta
-    gzip_enabled: bool
-    tls_enabled: bool
+    batch_config: BatchConfig = None
+    timeout: timedelta = None
+    connection_timeout: timedelta = None
+    gzip_enabled: bool = False
+    tls_enabled: bool = False
     auth_config: AuthConfig = None
     tls_config: ssl.SSLContext = None
 
diff --git a/opengemini_client/test_utils.py b/opengemini_client/test_utils.py
index d6f6ba8..7bc112d 100644
--- a/opengemini_client/test_utils.py
+++ b/opengemini_client/test_utils.py
@@ -1,15 +1,8 @@
-import datetime
-
 from opengemini_client import client_impl
 from opengemini_client import models
 
 
 def get_test_default_client():
-    cfg = models.Config(address=[models.Address(host='127.0.0.1', port=8086)],
-                        batch_config=models.BatchConfig(batch_size=10, batch_interval=10),
-                        timeout=datetime.timedelta(seconds=10),
-                        connection_timeout=datetime.timedelta(seconds=10),
-                        gzip_enabled=False, tls_enabled=False
-                        )
+    cfg = models.Config(address=[models.Address(host='127.0.0.1', port=8086)])
     cli = client_impl.OpenGeminiDBClient(cfg)
     return cli