diff --git a/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/HardAfterSaleCarService.java b/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/HardAfterSaleCarService.java
index 17e8913e1..be28ecdf3 100644
--- a/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/HardAfterSaleCarService.java
+++ b/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/HardAfterSaleCarService.java
@@ -15,18 +15,18 @@ import java.util.Map;
 public interface HardAfterSaleCarService extends IService<HardAfterSaleCarEntity> {
 
     /**
-     * 按订单查询全部售后商品汇总，保留后台历史能力。
+     * 按订单查询申请中及已完成售后商品汇总，取消和拒绝记录不占用退款额度。
      *
      * @param orderId 订单 ID
-     * @return 售后商品汇总；订单不存在时返回 {@code null}
+     * @return 有效退款占用商品汇总；订单不存在时返回 {@code null}
      */
     List<HardAfterSaleCarEntity> getByOrderId(Long orderId);
 
     /**
-     * 按父购物车查询待审核和已完成售后商品汇总，取消及拒绝记录不占用可退数量。
+     * 按父购物车查询全部历史售后商品汇总，保留底层旧查询能力。
      *
      * @param carParentId 父购物车 ID
-     * @return 按商品 ID 聚合的有效售后商品汇总
+     * @return 不区分售后状态并按商品 ID 聚合的历史售后商品汇总
      */
     List<HardAfterSaleCarEntity> getByCarPrentId(Long carParentId);
 
diff --git a/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImpl.java b/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImpl.java
index b634f089b..6a384ef22 100644
--- a/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImpl.java
+++ b/pjcloud-hardware/pjcloud-hardware-biz/src/main/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImpl.java
@@ -33,11 +33,17 @@ public class HardAfterSaleCarServiceImpl extends ServiceImpl<HardAfterSaleCarMap
     /** 订单 Mapper，用于从订单 ID 解析其父购物车 ID。 */
     private final HardOrderMapper hardOrderMapper;
 
+    /**
+     * 按订单查询仍占用退款额度的商品汇总，取消和拒绝的售后必须释放可退数量。
+     *
+     * @param orderId 原订单 ID
+     * @return 申请中及已完成售后商品汇总；订单不存在时返回 {@code null}
+     */
     @Override
     public List<HardAfterSaleCarEntity> getByOrderId(Long orderId) {
         HardOrderEntity order = hardOrderMapper.selectById(orderId);
         if (ObjectUtil.isEmpty(order)) return null;
-        return getByCarPrentId(order.getParentCarId());
+        return getOccupiedByCarParentId(order.getParentCarId());
     }
 
     @Override
diff --git a/pjcloud-hardware/pjcloud-hardware-biz/src/test/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImplTest.java b/pjcloud-hardware/pjcloud-hardware-biz/src/test/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImplTest.java
index ed1f1d934..d8caa4d46 100644
--- a/pjcloud-hardware/pjcloud-hardware-biz/src/test/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImplTest.java
+++ b/pjcloud-hardware/pjcloud-hardware-biz/src/test/java/com/bsd/pjcloud/hard/service/impl/order/HardAfterSaleCarServiceImplTest.java
@@ -2,6 +2,7 @@ package com.bsd.pjcloud.hard.service.impl.order;
 
 import com.bsd.pjcloud.hard.api.constant.refund.HardSaleStatusEnum;
 import com.bsd.pjcloud.hard.api.entity.order.HardAfterSaleCarEntity;
+import com.bsd.pjcloud.hard.api.entity.order.HardOrderEntity;
 import com.bsd.pjcloud.hard.api.vo.order.HardCarVo;
 import com.bsd.pjcloud.hard.mapper.order.HardAfterSaleCarMapper;
 import com.bsd.pjcloud.hard.mapper.order.HardOrderMapper;
@@ -37,6 +38,26 @@ class HardAfterSaleCarServiceImplTest {
         ReflectionTestUtils.setField(service, "baseMapper", afterSaleCarMapper);
     }
 
+    /**
+     * 验证后台退款购物车只聚合申请中和已完成记录，买家取消及卖家拒绝不会继续占用商品数量。
+     */
+    @Test
+    void getByOrderIdOnlyReturnsRefundOccupancy() {
+        Long orderId = 99L;
+        Long parentCarId = 100L;
+        HardOrderEntity order = new HardOrderEntity();
+        order.setParentCarId(parentCarId);
+        List<HardAfterSaleCarEntity> occupiedCars = List.of(refundCar(parentCarId, 501L, 1));
+        List<String> occupiedStatuses = List.of(HardSaleStatusEnum.APPLY.getStatus(),
+                HardSaleStatusEnum.COMPLETE.getStatus());
+        when(orderMapper.selectById(orderId)).thenReturn(order);
+        when(afterSaleCarMapper.getOccupiedByCarParentId(parentCarId, occupiedStatuses)).thenReturn(occupiedCars);
+
+        assertEquals(occupiedCars, service.getByOrderId(orderId));
+
+        verify(afterSaleCarMapper).getOccupiedByCarParentId(parentCarId, occupiedStatuses);
+    }
+
     /**
      * 验证同一商品存在多行购物车快照时，已退款和申请中份数按行依次分配且原数量保持不变。
      */