diff --git a/service/repositories/shopping_cart.go b/service/repositories/shopping_cart.go
index 005cd527..106ac9d3 100644
--- a/service/repositories/shopping_cart.go
+++ b/service/repositories/shopping_cart.go
@@ -136,9 +136,9 @@ func (d *defaultShoppingCart) CaculateStepPrice(purchaseQuantity int64, stepPric
 	//遍历查询合适的价格
 	for k, v := range stepPrice.PriceRange {
 		//购买数量>起点
-		if purchaseQuantity > v.StartQuantity {
-			//最后一个 || 小于等于终点
-			if k == l-1 || (purchaseQuantity < v.EndQuantity && purchaseQuantity >= v.StartQuantity) {
+		if purchaseQuantity >= v.StartQuantity {
+			//最后一个 || 小于终点
+			if k == l-1 || purchaseQuantity < v.EndQuantity {
 				itemPrice = v.Price + fittingPrice
 				return itemPrice * purchaseQuantity, itemPrice, nil
 			}