diff --git a/internal/api/mobile/order_preview/shopping_trolley_create.go b/internal/api/mobile/order_preview/shopping_trolley_create.go
index 64d2835..e62539b 100755
--- a/internal/api/mobile/order_preview/shopping_trolley_create.go
+++ b/internal/api/mobile/order_preview/shopping_trolley_create.go
@@ -326,7 +326,7 @@ func CreatePreviewShoppingTrolleyOrder(c *gin.Context) {
 		}
 		goodsTotalCommission = goodsTotalCommission.Add(v.TotalCommission)
 		coinTotalAmount = coinTotalAmount.Add(v.CoinAmount)
-		actualTotalAmount = actualTotalAmount.Sub(coinTotalAmount) // 减去抵扣
+		actualTotalAmount = actualTotalAmount.Sub(v.CoinAmount) // 减去抵扣
 	}
 
 	if actualTotalAmount.LessThan(decimal.NewFromFloat(-0.01)) {