diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderBaseServiceImpl.java b/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderBaseServiceImpl.java
index a6ece43f..2977feee 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderBaseServiceImpl.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderBaseServiceImpl.java
@@ -3287,6 +3287,8 @@ public class ShopOrderBaseServiceImpl extends BaseServiceImpl<ShopOrderBaseMappe
 
                 Integer order_item_inventory_lock = order_item_row.getOrder_item_inventory_lock();
                 String item_src_id = order_item_row.getItem_src_id();
+
+                logger.debug("尝试执行订单商品item_src_id:{} 锁定库存:{}", item_src_id, order_item_inventory_lock);
                 if (ObjectUtil.equal(1002, order_item_inventory_lock) && CheckUtil.isNotEmpty(item_src_id)) {
                     Long item_id = order_item_row.getItem_id();
                     if (shopProductItemService.lockSkuStock(item_id, order_item_row.getOrder_item_quantity()) <= 0) {
@@ -3294,6 +3296,8 @@ public class ShopOrderBaseServiceImpl extends BaseServiceImpl<ShopOrderBaseMappe
                         throw new ApiException(String.format(I18nUtil._("更改: %s 冻结库存失败!"), item_id));
                     }
 
+                    logger.debug("成功执行订单商品item_src_id:{} 锁定库存:{}", item_src_id, order_item_inventory_lock);
+
                     // RMK 第三方数据同步相关：redis 给这个商品减去对应的库存
                     Map<String, Integer> stockDeltaMap = new HashMap<>();
                     stockDeltaMap.put(item_src_id, -order_item_quantity);
diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/product/service/impl/ShopProductItemServiceImpl.java b/mall-shop/src/main/java/com/suisung/mall/shop/product/service/impl/ShopProductItemServiceImpl.java
index 994b5b20..0029f7f0 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/product/service/impl/ShopProductItemServiceImpl.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/product/service/impl/ShopProductItemServiceImpl.java
@@ -59,6 +59,7 @@ import com.suisung.mall.shop.store.service.*;
 import com.suisung.mall.shop.user.service.ShopUserFavoritesItemService;
 import com.suisung.mall.shop.user.service.ShopUserProductBrowseService;
 import io.seata.spring.annotation.GlobalTransactional;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -90,6 +91,7 @@ import static com.suisung.mall.common.utils.I18nUtil._;
  * @author Xinze
  * @since 2021-04-07
  */
+@Slf4j
 @Service
 public class ShopProductItemServiceImpl extends BaseServiceImpl<ShopProductItemMapper, ShopProductItem> implements ShopProductItemService {
 
@@ -2237,17 +2239,34 @@ public class ShopProductItemServiceImpl extends BaseServiceImpl<ShopProductItemM
     }
 
     /**
-     * 锁定库存
+     * 锁定SKU库存
      *
-     * @param itemId
-     * @param cart_quantity
-     * @return
+     * @param itemId       商品SKU ID
+     * @param cartQuantity 购物车商品数量
+     * @return 影响的行数，1表示锁定成功，0表示锁定失败（库存不足）
      */
     @Override
-    public int lockSkuStock(Long itemId, int cart_quantity) {
-        int flag = this.baseMapper.lockSkuStock(itemId, cart_quantity);
+    public int lockSkuStock(Long itemId, int cartQuantity) {
+        // 参数校验
+        if (itemId == null || cartQuantity <= 0) {
+            log.warn("锁定SKU库存参数异常: itemId={}, cartQuantity={}", itemId, cartQuantity);
+            return 0;
+        }
+
+        // 调用Mapper方法锁定库存
+        int affectedRows = this.baseMapper.lockSkuStock(itemId, cartQuantity);
+
+        // 清理SKU库存缓存
         cleanSkuStockCache(itemId);
-        return flag;
+
+        // 记录库存锁定操作日志
+        if (affectedRows > 0) {
+            log.debug("SKU库存锁定成功: itemId={}, cartQuantity={}, affectedRows={}", itemId, cartQuantity, affectedRows);
+        } else {
+            log.warn("SKU库存锁定失败，可能库存不足: itemId={}, cartQuantity={}", itemId, cartQuantity);
+        }
+
+        return affectedRows;
     }
 
     @Override