diff --git a/service/repositories/order.go b/service/repositories/order.go
index e9846d19..2a189a6c 100644
--- a/service/repositories/order.go
+++ b/service/repositories/order.go
@@ -1016,8 +1016,13 @@ func (d *defaultOrder) Create(ctx context.Context, in *CreateReq) (res *CreateRe
 				return errors.New("shoppingCartProductModel3d.StepPrice nil")
 			}
 
+			var fittingPrice int64
+			if shoppingCart.ShoppingCartProductModel3dFitting != nil {
+				fittingPrice = *shoppingCart.ShoppingCartProductModel3dFitting.Price
+			}
+
 			/* 计算价格 */
-			productTotalPrice, productPrice, err := NewShoppingCart(tx, nil, nil).CaculateStepPrice(*shoppingCart.PurchaseQuantity, stepPriceJson, *shoppingCart.ShoppingCartProductModel3dFitting.Price)
+			productTotalPrice, productPrice, err := NewShoppingCart(tx, nil, nil).CaculateStepPrice(*shoppingCart.PurchaseQuantity, stepPriceJson, fittingPrice)
 			if err != nil {
 				errorCode = *basic.CodeErrOrderCreatProductPriceAbsent
 				errorCode.Message = "create order failed, step price of product '" + shoppingCartSnapshot.ProductInfo.ProductName + "'is failed"
diff --git a/service/repositories/shopping_cart.go b/service/repositories/shopping_cart.go
index afc7e18f..ad6410ec 100644
--- a/service/repositories/shopping_cart.go
+++ b/service/repositories/shopping_cart.go
@@ -5,9 +5,10 @@ import (
 	"errors"
 	"fusenapi/model/gmodel"
 	"fusenapi/utils/hash"
+	"strings"
+
 	"github.com/aws/aws-sdk-go/aws/session"
 	"gorm.io/gorm"
-	"strings"
 )
 
 func NewShoppingCart(gormDB *gorm.DB, bLMServiceUrl *string, awsSession *session.Session) ShoppingCart {