diff --git a/src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java b/src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java
index e4cf0b66..496e8110 100644
--- a/src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java
@@ -455,6 +455,7 @@ public class PrinterServiceImpl implements PrinterService {
             }
         }
         request.setAutoUseCoupon(true);
+        request.setPreviewOnly(true); // 仅查询价格，不实际使用优惠
 
         // 使用统一价格计算服务
         PriceCalculationResult result = priceCalculationService.calculatePrice(request);
@@ -672,6 +673,7 @@ public class PrinterServiceImpl implements PrinterService {
         request.setProducts(productItems);
         request.setAutoUseCoupon(true);
         request.setPreviewOnly(false);
+        request.setOrderId(String.valueOf(orderId)); // 设置订单ID
 
         PriceCalculationResult priceResult = priceCalculationService.calculatePrice(request);