diff --git a/core/sfgrid_strategy.py b/core/sfgrid_strategy.py
index 9f52835..b6b6817 100644
--- a/core/sfgrid_strategy.py
+++ b/core/sfgrid_strategy.py
@@ -1,6 +1,3 @@
-from peewee import IntegerField
-
-
 from core import strategy_db
 from core.eventbus import EventTradeTargetUpdate, event_bus
 from core.strategy_db import OrderTypeBuy, OrderTypeInit, OrderTypeSell, TradeTarget
diff --git a/core/strategy_db.py b/core/strategy_db.py
index 97f2bed..784d021 100644
--- a/core/strategy_db.py
+++ b/core/strategy_db.py
@@ -1,6 +1,6 @@
 from peewee import SqliteDatabase, Model, CharField, IntegerField, FloatField, BooleanField
 
-from xtquant import xtconn, xtconstant
+from xtquant import xtconstant
 
 # 连接到SQLite数据库
 db = SqliteDatabase('example.db')