diff --git a/src/main/java/com/ycwl/basic/pricing/dto/PriceCalculationRequest.java b/src/main/java/com/ycwl/basic/pricing/dto/PriceCalculationRequest.java
index 95633347..1752d3d7 100644
--- a/src/main/java/com/ycwl/basic/pricing/dto/PriceCalculationRequest.java
+++ b/src/main/java/com/ycwl/basic/pricing/dto/PriceCalculationRequest.java
@@ -44,9 +44,14 @@ public class PriceCalculationRequest {
      * 是否自动使用券码优惠
      */
     private Boolean autoUseVoucher = true;
-    
+
     /**
      * 是否仅预览优惠（不实际使用）
      */
-    private Boolean previewOnly = false;
+    private Boolean previewOnly = true;
+
+    /**
+     * 订单ID（在实际使用优惠时必填）
+     */
+    private String orderId;
 }
\ No newline at end of file
diff --git a/src/main/java/com/ycwl/basic/pricing/service/impl/PriceCalculationServiceImpl.java b/src/main/java/com/ycwl/basic/pricing/service/impl/PriceCalculationServiceImpl.java
index 2b1231a0..969b9f58 100644
--- a/src/main/java/com/ycwl/basic/pricing/service/impl/PriceCalculationServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/pricing/service/impl/PriceCalculationServiceImpl.java
@@ -402,8 +402,19 @@ public class PriceCalculationServiceImpl implements IPriceCalculationService {
                 log.info("已标记券码为使用: {}", result.getUsedVoucher().getVoucherCode());
             }
             
-            // 优惠券的使用标记由原有的CouponService处理
-            // 这里不需要额外处理
+            // 标记优惠券为已使用
+            if (result.getUsedCoupon() != null && result.getUsedCoupon().getCouponId() != null) {
+                CouponUseRequest couponUseRequest = new CouponUseRequest();
+                couponUseRequest.setCouponId(result.getUsedCoupon().getCouponId());
+                couponUseRequest.setUserId(request.getUserId());
+                couponUseRequest.setOrderId(request.getOrderId());
+                couponUseRequest.setDiscountAmount(result.getUsedCoupon().getActualDiscountAmount());
+                couponUseRequest.setScenicId(request.getScenicId() != null ? String.valueOf(request.getScenicId()) : null);
+
+                couponService.useCoupon(couponUseRequest);
+                log.info("已标记优惠券为使用: couponId={}, userId={}, orderId={}",
+                    result.getUsedCoupon().getCouponId(), request.getUserId(), request.getOrderId());
+            }
             
         } catch (Exception e) {
             log.error("标记优惠使用状态时发生异常", e);