diff --git a/python/bbgo/services.py b/python/bbgo/services.py
index 13c83b483..f37e83dcc 100644
--- a/python/bbgo/services.py
+++ b/python/bbgo/services.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Iterator
 from typing import List
 from typing import Tuple
@@ -10,12 +12,14 @@ from .data import KLine
 from .data import MarketDataEvent
 from .data import Subscription
 from .data import UserDataEvent
+from .utils import get_insecure_channel
 
 
 class UserDataService(object):
+    stub: bbgo_pb2_grpc.UserDataServiceStub
 
-    def __init__(self, stub: bbgo_pb2_grpc.UserDataServiceStub) -> None:
-        self.stub = stub
+    def __init__(self, host: str, port: int) -> None:
+        self.stub = bbgo_pb2_grpc.UserDataServiceStub(get_insecure_channel(host, port))
 
     def subscribe(self, session: str) -> Iterator[UserDataEvent]:
         request = bbgo_pb2.UserDataRequest(session)
@@ -26,9 +30,10 @@ class UserDataService(object):
 
 
 class MarketService(object):
+    stub: bbgo_pb2_grpc.MarketDataServiceStub
 
-    def __init__(self, stub: bbgo_pb2_grpc.MarketDataServiceStub) -> None:
-        self.stub = stub
+    def __init__(self, host: str, port: int) -> None:
+        self.stub = bbgo_pb2_grpc.MarketDataServiceStub(get_insecure_channel(host, port))
 
     def subscribe(self, subscriptions: List[Subscription]) -> Iterator[MarketDataEvent]:
         request = bbgo_pb2.SubscribeRequest(subscriptions=[s.to_pb() for s in subscriptions])
@@ -63,9 +68,10 @@ class MarketService(object):
 
 
 class TradingService(object):
+    stub: bbgo_pb2_grpc.TradingServiceStub
 
-    def __init__(self, stub: bbgo_pb2_grpc.TradingServiceStub):
-        self.stub = stub
+    def __init__(self, host: str, port: int) -> None:
+        self.stub = bbgo_pb2_grpc.TradingServiceStub(get_insecure_channel(host, port))
 
     def submit_order(self,
                      exchange: str,
diff --git a/python/bbgo/utils.py b/python/bbgo/utils.py
index 1b93ef538..ffdb3049c 100644
--- a/python/bbgo/utils.py
+++ b/python/bbgo/utils.py
@@ -27,3 +27,17 @@ def get_credentials_from_env():
     private_key_certificate_chain_pairs = [(private_key, certificate_chain)]
     server_credentials = grpc.ssl_server_credentials(private_key_certificate_chain_pairs)
     return server_credentials
+
+
+def get_insecure_channel(host: str, port: int) -> grpc.Channel:
+    address = f'{host}:{port}'
+    return grpc.insecure_channel(address)
+
+
+def get_insecure_channel_from_env() -> grpc.Channel:
+    host = os.environ.get('BBGO_GRPC_HOST') or '127.0.0.1'
+    port = os.environ.get('BBGO_GRPC_PORT') or 50051
+
+    address = get_insecure_channel(host, port)
+
+    return grpc.insecure_channel(address)
diff --git a/python/query_klines.py b/python/query_klines.py
index 153a282da..a8f0b477b 100644
--- a/python/query_klines.py
+++ b/python/query_klines.py
@@ -1,7 +1,5 @@
 import click
-import grpc
 
-import bbgo_pb2_grpc
 from bbgo import MarketService
 
 
@@ -9,11 +7,7 @@ from bbgo import MarketService
 @click.option('--host', default='127.0.0.1')
 @click.option('--port', default=50051)
 def main(host, port):
-    address = f'{host}:{port}'
-    channel = grpc.insecure_channel(address)
-
-    stub = bbgo_pb2_grpc.MarketDataServiceStub(channel)
-    service = MarketService(stub)
+    service = MarketService(host, port)
 
     klines, error = service.query_klines(exchange='binance', symbol='BTCUSDT', interval='1m', limit=10)
 
diff --git a/python/subscribe.py b/python/subscribe.py
index 3ed49f0cc..abd0ff963 100644
--- a/python/subscribe.py
+++ b/python/subscribe.py
@@ -1,8 +1,6 @@
 import click
-import grpc
 from loguru import logger
 
-import bbgo_pb2_grpc
 from bbgo import MarketService
 from bbgo.data import Subscription
 from bbgo.enums import ChannelType
@@ -16,11 +14,8 @@ def main(host, port):
     subscriptions = [
         Subscription('binance', ChannelType.BOOK, symbol='BTCUSDT', depth=DepthType.FULL),
     ]
-    address = f'{host}:{port}'
-    channel = grpc.insecure_channel(address)
-    stub = bbgo_pb2_grpc.MarketDataServiceStub(channel)
 
-    service = MarketService(stub)
+    service = MarketService(host, port)
     response_iter = service.subscribe(subscriptions)
     for response in response_iter:
         logger.info(response)