diff --git a/src/backtest-service/models.py b/src/backtest-service/models.py
index 8ec1bae5..256203c4 100755
--- a/src/backtest-service/models.py
+++ b/src/backtest-service/models.py
@@ -25,6 +25,9 @@ class BacktestTask(BaseModel):
     end_date: date = Field(..., description="回测结束日期")
     parameters: Dict[str, Any] = Field(default_factory=dict, description="策略参数字典")
     capital: float = Field(default=1_000_000, description="起始资金")
+    rate: float = Field(default=0.3/10000, description="手续费率，默认万三")
+    slippage: float = Field(default=0.0, description="滑点（绝对值），默认0")
+    size: float = Field(default=1, description="合约乘数，默认1（股票），期货需指定")
     tick_size: Optional[float] = Field(None, description="最小价格变动，不指定则自动获取")