diff --git a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApi.java b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApi.java
index 1c69ea490..d4b3e5b1a 100644
--- a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApi.java
+++ b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApi.java
@@ -31,10 +31,11 @@ public interface ProductSkuApi {
     List<ProductSkuRespDTO> getSkuList(Collection<Long> ids);
 
     /**
-     * 批量扣减sku库存
+     * 批量扣减 SKU 库存
      *
      * @param batchReqDTO sku库存信息列表
      */
+    // TODO @LeeYan9: decrementSkuStockBatch? 啊哈, 动名词;
     void decrementStockBatch(SkuDecrementStockBatchReqDTO batchReqDTO);
 
 }
diff --git a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/dto/SkuDecrementStockBatchReqDTO.java b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/dto/SkuDecrementStockBatchReqDTO.java
index c0cee91ba..5c045d3d5 100644
--- a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/dto/SkuDecrementStockBatchReqDTO.java
+++ b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/sku/dto/SkuDecrementStockBatchReqDTO.java
@@ -7,6 +7,7 @@ import lombok.NoArgsConstructor;
 import java.util.List;
 
 /**
+ * TODO @LeeYan9: 1) 类注释; 2) Product 开头哈;
  * @author LeeYan9
  * @since 2022-08-26
  */
@@ -15,7 +16,7 @@ import java.util.List;
 @AllArgsConstructor
 public class SkuDecrementStockBatchReqDTO {
 
-
+    // TODO @LeeYan9: 参数校验
     private List<Item> items;
 
     @Data
@@ -24,6 +25,7 @@ public class SkuDecrementStockBatchReqDTO {
         /**
          * 商品 SPU 编号，自增
          */
+        // TODO @LeeYan9: 是不是不用传递哈
         private Long productId;
 
         /**
@@ -38,6 +40,7 @@ public class SkuDecrementStockBatchReqDTO {
 
     }
 
+    // TODO @LeeYan9: 构造方法, 是不是可以满足啦
     public static SkuDecrementStockBatchReqDTO of(List<Item> items) {
         return new SkuDecrementStockBatchReqDTO(items);
     }
diff --git a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/spu/dto/SpuInfoRespDTO.java b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/spu/dto/SpuInfoRespDTO.java
index 4392d9ad0..6aae7191b 100644
--- a/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/spu/dto/SpuInfoRespDTO.java
+++ b/yudao-module-mall/yudao-module-product-api/src/main/java/cn/iocoder/yudao/module/product/api/spu/dto/SpuInfoRespDTO.java
@@ -7,6 +7,7 @@ import lombok.Data;
 
 import java.util.List;
 
+// TODO @LeeYan9: ProductSpuRespDTO
 /**
  * @author LeeYan9
  * @since 2022-08-26
diff --git a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApiImpl.java b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApiImpl.java
index 288aaa4da..b29040a23 100644
--- a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApiImpl.java
+++ b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/sku/ProductSkuApiImpl.java
@@ -16,6 +16,7 @@ import java.util.Collections;
 import java.util.List;
 
 /**
+ * TODO LeeYan9: 类注释;
  * @author LeeYan9
  * @since 2022-09-06
  */
@@ -28,6 +29,7 @@ public class ProductSkuApiImpl implements ProductSkuApi {
 
     @Override
     public List<SkuInfoRespDTO> getSkusByIds(Collection<Long> skuIds) {
+        // TODO TODO LeeYan9: AllEmpty?
         if (CollectionUtils.isAnyEmpty(skuIds)) {
             return Collections.emptyList();
         }
@@ -38,6 +40,7 @@ public class ProductSkuApiImpl implements ProductSkuApi {
     @Override
     @Transactional(rollbackFor = Exception.class)
     public void decrementStockBatch(SkuDecrementStockBatchReqDTO batchReqDTO) {
+        // TODO @LeeYan9: 最好 Service 去 for 循环;
         productSkuMapper.decrementStockBatch(batchReqDTO.getItems());
     }
 }
diff --git a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/spu/ProductSpuApiImpl.java b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/spu/ProductSpuApiImpl.java
index bc914d7a1..3ee034ce4 100644
--- a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/spu/ProductSpuApiImpl.java
+++ b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/api/spu/ProductSpuApiImpl.java
@@ -14,6 +14,8 @@ import java.util.Collections;
 import java.util.List;
 
 /**
+ * TODO LeeYan9: 类注释;
+ *
  * @author LeeYan9
  * @since 2022-09-06
  */
@@ -26,6 +28,7 @@ public class ProductSpuApiImpl implements ProductSpuApi {
 
     @Override
     public List<SpuInfoRespDTO> getSpuList(Collection<Long> spuIds) {
+        // TODO TODO LeeYan9: AllEmpty?
         if (CollectionUtils.isAnyEmpty(spuIds)) {
             return Collections.emptyList();
         }
diff --git a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/sku/ProductSkuConvert.java b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/sku/ProductSkuConvert.java
index f77e1f60f..d9845ddfa 100755
--- a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/sku/ProductSkuConvert.java
+++ b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/sku/ProductSkuConvert.java
@@ -38,5 +38,4 @@ public interface ProductSkuConvert {
 
     List<SkuInfoRespDTO> convertList03(List<ProductSkuDO> list);
 
-
 }
diff --git a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/spu/ProductSpuConvert.java b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/spu/ProductSpuConvert.java
index 4eb584893..26fe6a028 100755
--- a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/spu/ProductSpuConvert.java
+++ b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/convert/spu/ProductSpuConvert.java
@@ -36,6 +36,5 @@ public interface ProductSpuConvert {
     AppSpuPageRespVO convertAppResp(ProductSpuDO list);
 
     List<SpuInfoRespDTO> convertList2(List<ProductSpuDO> list);
-
-
+    
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/app/order/AppTradeOrderController.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/app/order/AppTradeOrderController.java
index 99f63527f..2d600a314 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/app/order/AppTradeOrderController.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/app/order/AppTradeOrderController.java
@@ -23,16 +23,13 @@ import javax.servlet.http.HttpServletRequest;
 @Api(tags = "用户 App - 交易订单")
 @RestController
 @RequestMapping("/trade/order")
-@RequiredArgsConstructor
+@RequiredArgsConstructor // TODO @LeeYan9: 先统一使用 @Resource 注入哈; 项目只有三层, 依赖注入会存在, 所以使用 @Resource; 也因此, 最好全局保持一致
 @Validated
 @Slf4j
 public class AppTradeOrderController {
 
-    // TODO 在思考下；
-
     private final TradeOrderService tradeOrderService;
 
-
     @GetMapping("/get-create-info")
     @ApiOperation("基于商品，确认创建订单")
     @PreAuthenticated
@@ -46,15 +43,12 @@ public class AppTradeOrderController {
     @PreAuthenticated
     public CommonResult<Long> createTradeOrder(@RequestBody AppTradeOrderCreateReqVO createReqVO,
                                                HttpServletRequest servletRequest) {
-//        return success(tradeOrderService.createTradeOrder(UserSecurityContextHolder.getUserId(),
-//                HttpUtil.getIp(servletRequest), createReqVO));
         // 获取登录用户
         Long loginUserId = SecurityFrameworkUtils.getLoginUserId();
         // 获取用户ip地址
         String clientIp = ServletUtil.getClientIP(servletRequest);
         // 创建交易订单，预支付记录
         Long result = tradeOrderService.createTradeOrder(loginUserId, clientIp, createReqVO);
-
         return CommonResult.success(result);
     }
 
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderConvert.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderConvert.java
index e775a2b68..f72ab6b4b 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderConvert.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderConvert.java
@@ -8,16 +8,11 @@ import org.mapstruct.Mapping;
 import org.mapstruct.Mappings;
 import org.mapstruct.factory.Mappers;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface TradeOrderConvert {
 
     TradeOrderConvert INSTANCE = Mappers.getMapper(TradeOrderConvert.class);
 
-
     @Mappings({
             @Mapping(source = "order.couponId", target = "couponId"),
             @Mapping(target = "remark", ignore = true),
@@ -25,4 +20,5 @@ public interface TradeOrderConvert {
             @Mapping(source = "createVO.addressId", target = "receiverAreaId")
     })
     TradeOrderDO convert(AppTradeOrderCreateReqVO createVO, PriceCalculateRespDTO.Order order);
+
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderItemConvert.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderItemConvert.java
index ed26fab7e..ac2e74d2f 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderItemConvert.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderItemConvert.java
@@ -7,18 +7,11 @@ import org.mapstruct.factory.Mappers;
 
 import java.util.List;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface TradeOrderItemConvert {
 
     TradeOrderItemConvert INSTANCE = Mappers.getMapper(TradeOrderItemConvert.class);
 
-    /**
-     * @param items sku列表价格
-     * @return 订单项
-     */
     List<TradeOrderItemDO> convertList(List<PriceCalculateRespDTO.OrderItem> items);
+
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/pay/PayOrderConvert.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/pay/PayOrderConvert.java
index 44a66a424..a32d42526 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/pay/PayOrderConvert.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/pay/PayOrderConvert.java
@@ -11,10 +11,6 @@ import org.mapstruct.factory.Mappers;
 
 import java.util.Date;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface PayOrderConvert {
 
@@ -30,4 +26,5 @@ public interface PayOrderConvert {
     default Date convertCreateTimeToPayExpireTime(Date cancelTime) {
         return DateUtil.offsetMinute(new Date(), 30);
     }
+    
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/price/PriceConvert.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/price/PriceConvert.java
index 3b2d173c3..da28b9e3e 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/price/PriceConvert.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/price/PriceConvert.java
@@ -7,10 +7,6 @@ import org.mapstruct.Mapping;
 import org.mapstruct.Mappings;
 import org.mapstruct.factory.Mappers;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface PriceConvert {
 
@@ -19,5 +15,6 @@ public interface PriceConvert {
     @Mappings(
             @Mapping(source = "userId" , target = "userId")
     )
-    PriceCalculateReqDTO convert(AppTradeOrderCreateReqVO createReqVO , Long userId);
+    PriceCalculateReqDTO convert(AppTradeOrderCreateReqVO createReqVO, Long userId);
+
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/sku/ProductSkuConvert.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/sku/ProductSkuConvert.java
index 7aa4f554b..916f2d9d8 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/sku/ProductSkuConvert.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/sku/ProductSkuConvert.java
@@ -17,5 +17,6 @@ public interface ProductSkuConvert {
 
     ProductSkuConvert INSTANCE = Mappers.getMapper(ProductSkuConvert.class);
 
-    List<SkuDecrementStockBatchReqDTO.Item> convert(List<TradeOrderItemDO> tradeOrderItems);
+    List<SkuDecrementStockBatchReqDTO.Item> convert(List<TradeOrderItemDO> list);
+
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/order/TradeOrderMapper.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/order/TradeOrderMapper.java
index 3b963540b..a62746b1b 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/order/TradeOrderMapper.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/order/TradeOrderMapper.java
@@ -4,10 +4,6 @@ import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.module.trade.dal.dataobject.order.TradeOrderDO;
 import org.apache.ibatis.annotations.Mapper;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface TradeOrderMapper extends BaseMapperX<TradeOrderDO> {
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/orderitem/TradeOrderItemMapper.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/orderitem/TradeOrderItemMapper.java
index 987d5a3f5..3a85e0cbb 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/orderitem/TradeOrderItemMapper.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/orderitem/TradeOrderItemMapper.java
@@ -4,10 +4,6 @@ import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.module.trade.dal.dataobject.order.TradeOrderItemDO;
 import org.apache.ibatis.annotations.Mapper;
 
-/**
- * @author LeeYan9
- * @since 2022-08-26
- */
 @Mapper
 public interface TradeOrderItemMapper extends BaseMapperX<TradeOrderItemDO> {
 }
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/framework/order/config/TradeOrderConfig.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/framework/order/config/TradeOrderConfig.java
index 8d6ebea15..715169275 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/framework/order/config/TradeOrderConfig.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/framework/order/config/TradeOrderConfig.java
@@ -3,6 +3,7 @@ package cn.iocoder.yudao.module.trade.framework.order.config;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Configuration;
 
+// TODO @LeeYan9: 可以直接给 TradeOrderProperties 一个 @Component生效哈
 /**
  * @author LeeYan9
  * @since 2022-09-15
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderService.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderService.java
index f3fc4b5e1..c70a2a273 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderService.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderService.java
@@ -3,15 +3,16 @@ package cn.iocoder.yudao.module.trade.service.order;
 import cn.iocoder.yudao.module.trade.controller.app.order.vo.AppTradeOrderCreateReqVO;
 
 /**
+ * TODO @LeeYan9: 类注释
  * @author LeeYan9
  * @since 2022-08-26
  */
 public interface TradeOrderService {
 
     /**
-     * 创建交易订单
+     * 创建交易订单 TODO @LeeYan9: 方法注释, 和参数要空一行
      * @param loginUserId 登录用户
-     * @param clientIp 用户ip地址
+     * @param clientIp 用户ip地址 // TODO @LeeYan9: 中英文之间, 空一行哈
      * @param createReqVO 创建交易订单请求模型
      * @return 交易订单创建结果
      */
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceImpl.java b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceImpl.java
index fb0f22ce9..86a0e844c 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceImpl.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceImpl.java
@@ -3,6 +3,7 @@ package cn.iocoder.yudao.module.trade.service.order;
 import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.text.StrBuilder;
 import cn.hutool.core.util.IdUtil;
+import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.common.enums.TerminalEnum;
 import cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil;
@@ -45,42 +46,41 @@ import java.util.Map;
 import java.util.Objects;
 
 /**
+ * TODO @LeeYan9: 注释
  * @author LeeYan9
  * @since 2022-08-26
  */
 @Service
 public class TradeOrderServiceImpl implements TradeOrderService {
 
+    // TODO @LeeYan9: 相同类型的, 可以放在一起,不用空行; 例如说 Mapper 和 API 和 Properties
+
     @Resource
     private TradeOrderMapper tradeOrderMapper;
-
     @Resource
     private TradeOrderItemMapper tradeOrderItemMapper;
 
     @Resource
     private PriceApi priceApi;
-
     @Resource
     private ProductSkuApi productSkuApi;
-
     @Resource
     private ProductSpuApi productSpuApi;
-
     @Resource
     private PayOrderApi payOrderApi;
 
     @Resource
     private TradeOrderProperties tradeOrderProperties;
 
+    // TODO LeeYan9: 静态变量, 需要在最前面哈; 另外, 静态变量的注释最好写下;
     private static final String BLANK_PLACEHOLDER = " ";
     private static final String MULTIPLIER_PLACEHOLDER = "x";
 
-
     @Override
     @Transactional(rollbackFor = Exception.class)
     public Long createTradeOrder(Long loginUserId, String clientIp, AppTradeOrderCreateReqVO createReqVO) {
 
-        List<Item> items = createReqVO.getItems();
+        List<Item> items = createReqVO.getItems(); // TODO @LeeYan9: 方法第一行, 不用空哈;
         // 商品SKU检查 sku可售状态,库存
         List<ProductSkuRespDTO> skuInfos = productSkuApi.getSkuList(CollectionUtils.convertSet(items, Item::getSkuId));
         Map<Long, ProductSkuRespDTO> skuInfoMap = CollectionUtils.convertMap(skuInfos, ProductSkuRespDTO::getId);
@@ -93,33 +93,38 @@ public class TradeOrderServiceImpl implements TradeOrderService {
         // 价格计算
         PriceCalculateReqDTO priceCalculateReqDTO = PriceConvert.INSTANCE.convert(createReqVO, loginUserId);
         PriceCalculateRespDTO priceResp = priceApi.calculatePrice(priceCalculateReqDTO);
+        // TODO @LeeYan9: 是可以思考下, 订单的营销优惠记录, 应该记录在哪里, 微信讨论起来!
+
         // 订单信息记录
         TradeOrderDO tradeOrderDO = TradeOrderConvert.INSTANCE.convert(createReqVO, priceResp.getOrder());
-        fillTradeOrderInfoFromReqInfo(tradeOrderDO,createReqVO,loginUserId, clientIp);
+        fillTradeOrderInfoFromReqInfo(tradeOrderDO,createReqVO,loginUserId, clientIp); // TODO @LeeYan9: tradeOrderDO, createReqVO, loginUserId, clientIp
         tradeOrderMapper.insert(tradeOrderDO);
 
         // 订单项信息记录
         List<TradeOrderItemDO> tradeOrderItems = TradeOrderItemConvert.INSTANCE.convertList(priceResp.getOrder().getItems());
-        //-填充订单项-SKU信息
+        // 填充订单项-SKU信息
         fillItemsInfoFromSkuAndOrder(tradeOrderDO, tradeOrderItems, skuInfoMap);
         tradeOrderItemMapper.insertBatch(tradeOrderItems);
 
+        // TODO @LeeYan9: 先扣减库存哈; 可能会扣减失败; 毕竟 get 和 update 之间, 会有并发的可能性
         // 库存扣减
         List<SkuDecrementStockBatchReqDTO.Item> skuDecrementStockItems = ProductSkuConvert.INSTANCE.convert(tradeOrderItems);
         productSkuApi.decrementStockBatch(SkuDecrementStockBatchReqDTO.of(skuDecrementStockItems));
 
         // 构建预支付请求参数
+        // TODO @LeeYan9: 需要更新到订单上
         PayOrderInfoCreateReqDTO payOrderCreateReqDTO = PayOrderConvert.INSTANCE.convert(tradeOrderDO);
         fillPayOrderInfoFromItems(payOrderCreateReqDTO, tradeOrderItems);
         // 生成预支付
         return payOrderApi.createPayOrder(payOrderCreateReqDTO);
     }
 
+    // TODO @LeeYan9: 填充就好, 不用 from 哈;
     private void fillTradeOrderInfoFromReqInfo(TradeOrderDO tradeOrderDO, AppTradeOrderCreateReqVO createReqVO,
                                                Long loginUserId, String clientIp) {
         tradeOrderDO.setUserId(loginUserId);
         tradeOrderDO.setUserIp(clientIp);
-        tradeOrderDO.setSn(IdUtil.getSnowflakeNextId() + "");
+        tradeOrderDO.setSn(IdUtil.getSnowflakeNextId() + ""); // TODO @LeeYan9: 思考下, 怎么生成好点哈; 这个是会展示给用户的;
         tradeOrderDO.setStatus(TradeOrderStatusEnum.WAITING_PAYMENT.getStatus());
         tradeOrderDO.setType(TradeOrderTypeEnum.NORMAL.getType());
         tradeOrderDO.setRefundStatus(TradeOrderRefundStatusEnum.NONE.getStatus());
@@ -139,7 +144,6 @@ public class TradeOrderServiceImpl implements TradeOrderService {
         // 填写商品信息
         StrBuilder subject = new StrBuilder();
         StrBuilder body = new StrBuilder();
-
         for (TradeOrderItemDO tradeOrderItem : tradeOrderItems) {
             // append subject
             subject.append(BLANK_PLACEHOLDER);
@@ -151,6 +155,7 @@ public class TradeOrderServiceImpl implements TradeOrderService {
             body.append(tradeOrderItem.getCount());
         }
         // 设置 subject & body
+        // TODO @LeeYan9: 可以抽象一个 StrUtils 方法; 或者看看 hutool 有没自带的哈
         payOrderInfoCreateReqDTO.setSubject(StrUtils.maxLength(subject.subString(1), 32));
         payOrderInfoCreateReqDTO.setBody(StrUtils.maxLength(body.subString(1), 128));
     }
@@ -182,6 +187,7 @@ public class TradeOrderServiceImpl implements TradeOrderService {
         }
     }
 
+    // TODO @LeeYan9: checkSpuXXX 会不会好点哈? ps: 这个貌似是 sku 哈
     private void checkSaleableAndStockFromSpu(Map<Long, ProductSkuRespDTO> skuInfoMap,
                                               List<Item> items) {
         // sku 不存在
diff --git a/yudao-module-mall/yudao-module-trade-biz/src/main/test/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceTest.java b/yudao-module-mall/yudao-module-trade-biz/src/main/test/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceTest.java
index 97fb084a8..6b3281d3f 100644
--- a/yudao-module-mall/yudao-module-trade-biz/src/main/test/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceTest.java
+++ b/yudao-module-mall/yudao-module-trade-biz/src/main/test/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderServiceTest.java
@@ -30,6 +30,7 @@ import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
+// TODO @芋艿: 单测的 review; 最后搞;
 /**
  * @author LeeYan9
  * @since 2022-09-07
diff --git a/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderApi.java b/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderApi.java
index 9b345c587..36022b172 100644
--- a/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderApi.java
+++ b/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderApi.java
@@ -3,12 +3,13 @@ package cn.iocoder.yudao.module.pay.api.order;
 import javax.validation.Valid;
 
 /**
+ * 支付单 API 接口
+ *
  * @author LeeYan9
  * @since 2022-08-26
  */
 public interface PayOrderApi {
 
-
     /**
      * 创建支付单
      *
diff --git a/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderInfoCreateReqDTO.java b/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderInfoCreateReqDTO.java
index fe5173cde..fda4b3d8d 100644
--- a/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderInfoCreateReqDTO.java
+++ b/yudao-module-pay/yudao-module-pay-api/src/main/java/cn/iocoder/yudao/module/pay/api/order/PayOrderInfoCreateReqDTO.java
@@ -9,8 +9,10 @@ import javax.validation.constraints.NotNull;
 import java.io.Serializable;
 import java.util.Date;
 
+// TODO @LeeYan9: 1) 新建一个 dto 包, 然后挪进去哈; 2) 在 order下; Info 可以去掉;
 /**
  * 支付单创建 Request DTO
+ *
  * @author LeeYan9
  */
 @Data
@@ -53,6 +55,7 @@ public class PayOrderInfoCreateReqDTO implements Serializable {
      * 支付金额，单位：分
      */
     @NotNull(message = "支付金额不能为空")
+    // TODO @LeeYan9: 是不是 @Min 注解呀, 是 Integer 哈
     @DecimalMin(value = "0", inclusive = false, message = "支付金额必须大于零")
     private Integer amount;