diff --git a/vnpy/app/spread_trading/strategies/statistical_arbitrage_strategy.py b/vnpy/app/spread_trading/strategies/statistical_arbitrage_strategy.py
index 935b8b7284..80309cb7ab 100644
--- a/vnpy/app/spread_trading/strategies/statistical_arbitrage_strategy.py
+++ b/vnpy/app/spread_trading/strategies/statistical_arbitrage_strategy.py
@@ -136,6 +136,8 @@ def on_spread_bar(self, bar: BarData):
                     interval=self.interval
                 )
 
+        self.put_event()
+
     def on_spread_pos(self):
         """
         Callback when spread position is updated.