diff --git a/example/ScanVertexEdgeExample.py b/example/ScanVertexEdgeExample.py
index c70b3c8e..ec2cf388 100644
--- a/example/ScanVertexEdgeExample.py
+++ b/example/ScanVertexEdgeExample.py
@@ -131,6 +131,7 @@ def scan_person_edge(graph_storage_client):
             [("172.28.1.1", 9559), ("172.28.1.2", 9559), ("172.28.1.3", 9559)], 50000
         )
         graph_storage_client = GraphStorageClient(meta_cache)
+        graph_storage_client.set_user_passwd("root", "nebula")
         prepare_data()
         scan_person_vertex(graph_storage_client)
         scan_person_edge(graph_storage_client)
diff --git a/nebula3/sclient/GraphStorageClient.py b/nebula3/sclient/GraphStorageClient.py
index 0db2fffa..c1e73c4a 100644
--- a/nebula3/sclient/GraphStorageClient.py
+++ b/nebula3/sclient/GraphStorageClient.py
@@ -44,7 +44,7 @@ def __init__(self, meta_cache, storage_addrs=None, time_out=60000):
         self._connections = []
         self._create_connection()
 
-    def set_userPasswd(self, user, passwd):
+    def set_user_passwd(self, user, passwd):
         """set user and password for scan. only useful for enterprise
         :return:
         """