diff --git a/order/order-application/src/main/java/cn/iocoder/mall/order/application/convert/OrderConvertAPP.java b/order/order-application/src/main/java/cn/iocoder/mall/order/application/convert/OrderConvertAPP.java
index 97a337e0c..98703be0e 100644
--- a/order/order-application/src/main/java/cn/iocoder/mall/order/application/convert/OrderConvertAPP.java
+++ b/order/order-application/src/main/java/cn/iocoder/mall/order/application/convert/OrderConvertAPP.java
@@ -38,7 +38,7 @@ public interface OrderConvertAPP {
     OrderCreateDTO convert(OrderCreatePO orderCreatePO);
 
     @Mappings({})
-    List<OrderCreateItemDTO> convert(List<CartItemBO> cartItems);
+    List<OrderCreateDTO.OrderItem> convert(List<CartItemBO> cartItems);
 
     default OrderCreateDTO createOrderCreateDTO(Integer userId, Integer userAddressId, String remark, String ip,
                                                 List<CartItemBO> cartItems, Integer couponCardId) {
diff --git a/order/order-application/src/main/java/cn/iocoder/mall/order/application/po/user/OrderCreatePO.java b/order/order-application/src/main/java/cn/iocoder/mall/order/application/po/user/OrderCreatePO.java
index f88ddf24d..4c193fbc3 100644
--- a/order/order-application/src/main/java/cn/iocoder/mall/order/application/po/user/OrderCreatePO.java
+++ b/order/order-application/src/main/java/cn/iocoder/mall/order/application/po/user/OrderCreatePO.java
@@ -1,9 +1,9 @@
 package cn.iocoder.mall.order.application.po.user;
 
-import cn.iocoder.mall.order.api.dto.OrderCreateItemDTO;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
+import javax.validation.constraints.Max;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Size;
 import java.io.Serializable;
@@ -38,6 +38,22 @@ public class OrderCreatePO implements Serializable {
 
     @NotNull()
     @Size(max = 1000, min = 1, message = "用户订单中没有商品!")
-    private List<OrderCreateItemDTO> orderItems;
+    private List<OrderItem> orderItems;
 
+    @Data
+    @Accessors(chain = true)
+    public static class OrderItem {
+
+        /**
+         * 商品编号
+         */
+        @NotNull
+        private Integer skuId;
+        /**
+         * 数量
+         */
+        @NotNull
+        @Max(value = 1000)
+        private Integer quantity;
+    }
 }
diff --git a/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateDTO.java b/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateDTO.java
index 77cf6d4f2..101b39451 100644
--- a/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateDTO.java
+++ b/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateDTO.java
@@ -3,6 +3,8 @@ package cn.iocoder.mall.order.api.dto;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
+import javax.validation.constraints.Max;
+import javax.validation.constraints.NotNull;
 import java.io.Serializable;
 import java.util.List;
 
@@ -40,6 +42,23 @@ public class OrderCreateDTO implements Serializable {
     ///
     /// order item
 
-    private List<OrderCreateItemDTO> orderItems;
-    
+    private List<OrderItem> orderItems;
+
+
+    @Data
+    @Accessors(chain = true)
+    public static class OrderItem {
+
+        /**
+         * 商品编号
+         */
+        @NotNull
+        private Integer skuId;
+        /**
+         * 数量
+         */
+        @NotNull
+        @Max(value = 1000)
+        private Integer quantity;
+    }
 }
diff --git a/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateItemDTO.java b/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateItemDTO.java
deleted file mode 100644
index 69ea79808..000000000
--- a/order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderCreateItemDTO.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package cn.iocoder.mall.order.api.dto;
-
-import lombok.Data;
-import lombok.experimental.Accessors;
-
-import javax.validation.constraints.Max;
-import javax.validation.constraints.NotNull;
-
-/**
- * @author Sin
- * @time 2019-03-17 09:37
- */
-@Data
-@Accessors(chain = true)
-public class OrderCreateItemDTO {
-
-    /**
-     * 商品编号
-     */
-    @NotNull
-    private Integer skuId;
-    /**
-     * 数量
-     */
-    @NotNull
-    @Max(value = 1000)
-    private Integer quantity;
-
-}
diff --git a/order/order-service-impl/pom.xml b/order/order-service-impl/pom.xml
index 5588a6cfd..a4e22371a 100644
--- a/order/order-service-impl/pom.xml
+++ b/order/order-service-impl/pom.xml
@@ -35,6 +35,11 @@
             <version>1.0-SNAPSHOT</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>cn.iocoder.mall</groupId>
+            <artifactId>promotion-service-api</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
 
         <dependency>
             <groupId>com.alibaba</groupId>
diff --git a/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/convert/OrderItemConvert.java b/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/convert/OrderItemConvert.java
index 1a8591d69..1b3831775 100644
--- a/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/convert/OrderItemConvert.java
+++ b/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/convert/OrderItemConvert.java
@@ -1,7 +1,7 @@
 package cn.iocoder.mall.order.biz.convert;
 
-import cn.iocoder.mall.order.api.dto.OrderCreateItemDTO;
 import cn.iocoder.mall.order.api.bo.OrderItemBO;
+import cn.iocoder.mall.order.api.dto.OrderCreateDTO;
 import cn.iocoder.mall.order.api.dto.OrderItemUpdateDTO;
 import cn.iocoder.mall.order.biz.dataobject.OrderItemDO;
 import org.mapstruct.Mapper;
@@ -28,7 +28,7 @@ public interface OrderItemConvert {
     List<OrderItemBO> convertOrderItemBO(List<OrderItemDO> orderItemDOList);
 
     @Mappings({})
-    List<OrderItemDO> convert(List<OrderCreateItemDTO> orderCreateItemDTOList);
+    List<OrderItemDO> convert(List<OrderCreateDTO.OrderItem> orderCreateItemDTOList);
 
     @Mappings({})
     List<OrderItemBO> convertOrderItemDO(List<OrderItemDO> orderItemDOList);
diff --git a/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/OrderServiceImpl.java b/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/OrderServiceImpl.java
index bd0a8e9dc..702508dd7 100644
--- a/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/OrderServiceImpl.java
+++ b/order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/OrderServiceImpl.java
@@ -194,7 +194,7 @@ public class OrderServiceImpl implements OrderService {
     @Transactional // TODO 芋艿，先不考虑分布式事务的问题
     public CommonResult<OrderCreateBO> createOrder(OrderCreateDTO orderCreateDTO) {
         Integer userId = orderCreateDTO.getUserId();
-        List<OrderCreateItemDTO> orderItemDTOList = orderCreateDTO.getOrderItems();
+        List<OrderCreateDTO.OrderItem> orderItemDTOList = orderCreateDTO.getOrderItems();
         List<OrderItemDO> orderItemDOList = OrderItemConvert.INSTANCE.convert(orderItemDTOList);
 
         // 获取商品信息
@@ -337,7 +337,7 @@ public class OrderServiceImpl implements OrderService {
                 .setUserId(orderCreateDTO.getUserId())
                 .setItems(new ArrayList<>(skus.size()))
                 .setCouponCardId(orderCreateDTO.getCouponCardId());
-        for (OrderCreateItemDTO item : orderCreateDTO.getOrderItems()) {
+        for (OrderCreateDTO.OrderItem item : orderCreateDTO.getOrderItems()) {
             calcOrderPriceDTO.getItems().add(new CalcOrderPriceDTO.Item(item.getSkuId(), item.getQuantity(), true));
         }
         // 执行计算
diff --git a/order/order-service-impl/src/test/java/cn/iocoder/mall/order/biz/service/OrderServiceImplTest.java b/order/order-service-impl/src/test/java/cn/iocoder/mall/order/biz/service/OrderServiceImplTest.java
index 4baed21ba..0f9bc56ca 100644
--- a/order/order-service-impl/src/test/java/cn/iocoder/mall/order/biz/service/OrderServiceImplTest.java
+++ b/order/order-service-impl/src/test/java/cn/iocoder/mall/order/biz/service/OrderServiceImplTest.java
@@ -5,7 +5,6 @@ import cn.iocoder.mall.order.OrderApplicationTest;
 import cn.iocoder.mall.order.api.OrderService;
 import cn.iocoder.mall.order.api.bo.OrderCreateBO;
 import cn.iocoder.mall.order.api.dto.OrderCreateDTO;
-import cn.iocoder.mall.order.api.dto.OrderCreateItemDTO;
 import cn.iocoder.mall.order.biz.dao.OrderMapper;
 import cn.iocoder.mall.order.biz.dataobject.OrderDO;
 import org.junit.Assert;