diff --git a/pom.xml b/pom.xml
index a99708b..0bf414b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -176,6 +176,11 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-loadbalancer</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-aop</artifactId>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/com/aida/seller/module/order/controller/OrderController.java b/src/main/java/com/aida/seller/module/order/controller/OrderController.java
index d4f4f8b..46a0076 100644
--- a/src/main/java/com/aida/seller/module/order/controller/OrderController.java
+++ b/src/main/java/com/aida/seller/module/order/controller/OrderController.java
@@ -9,6 +9,7 @@ import com.aida.seller.module.order.dto.CreateOrderDTO;
 import com.aida.seller.module.order.dto.OrderListDTO;
 import com.aida.seller.module.order.dto.BuyerOrdersDTO;
 import com.aida.seller.module.order.dto.UpdateOrderStatusDTO;
+import com.aida.seller.module.order.dto.UpdatePaymentIdDTO;
 import com.aida.seller.module.order.service.OrderService;
 import com.aida.seller.module.order.vo.AssetsItemVO;
 import com.aida.seller.module.order.vo.BuyerOrderVO;
@@ -96,4 +97,13 @@ public class OrderController {
     public Response<PageResponse<AssetsItemVO>> getAssetsPage(@RequestBody AssetsDTO dto) {
         return Response.success(PageResponse.success(orderService.getAssetsPage(dto)));
     }
+
+    @InternalOnly
+    @PutMapping("/payment-id/batch")
+    @Operation(summary = "批量回填PaymentId（仅内部服务调用）")
+    public Response<Void> updatePaymentIdByIds(@RequestBody UpdatePaymentIdDTO dto) {
+        orderService.updatePaymentIdByIds(dto.getOrderIds(), dto.getPaymentId());
+        return Response.success();
+    }
+
 }
diff --git a/src/main/java/com/aida/seller/module/order/dto/UpdateOrderStatusDTO.java b/src/main/java/com/aida/seller/module/order/dto/UpdateOrderStatusDTO.java
index dc2522a..f5ce601 100644
--- a/src/main/java/com/aida/seller/module/order/dto/UpdateOrderStatusDTO.java
+++ b/src/main/java/com/aida/seller/module/order/dto/UpdateOrderStatusDTO.java
@@ -2,22 +2,29 @@ package com.aida.seller.module.order.dto;
 
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.io.Serializable;
 import java.util.List;
 
-/**
- * 批量修改订单状态请求参数
- */
 @Data
+@NoArgsConstructor
 @Schema(description = "批量修改订单状态请求参数")
 public class UpdateOrderStatusDTO implements Serializable {
 
     private static final long serialVersionUID = 1L;
 
+    @Schema(description = "交易流水号")
+    private Long paymentId;
+
     @Schema(description = "订单ID列表")
     private List<Long> orderIds;
 
     @Schema(description = "目标状态：0-未支付，1-已支付，2-已取消")
     private Integer status;
+
+    public UpdateOrderStatusDTO(Integer status, Long paymentId) {
+        this.status = status;
+        this.paymentId = paymentId;
+    }
 }
diff --git a/src/main/java/com/aida/seller/module/order/dto/UpdatePaymentIdDTO.java b/src/main/java/com/aida/seller/module/order/dto/UpdatePaymentIdDTO.java
new file mode 100644
index 0000000..b74e7a4
--- /dev/null
+++ b/src/main/java/com/aida/seller/module/order/dto/UpdatePaymentIdDTO.java
@@ -0,0 +1,23 @@
+package com.aida.seller.module.order.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 批量回填PaymentId请求参数
+ */
+@Data
+@Schema(description = "批量回填PaymentId请求参数")
+public class UpdatePaymentIdDTO implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Schema(description = "订单ID列表")
+    private List<Long> orderIds;
+
+    @Schema(description = "支付单ID")
+    private Long paymentId;
+}
diff --git a/src/main/java/com/aida/seller/module/order/entity/OrderInfoEntity.java b/src/main/java/com/aida/seller/module/order/entity/OrderInfoEntity.java
index 8cc02ea..8888298 100644
--- a/src/main/java/com/aida/seller/module/order/entity/OrderInfoEntity.java
+++ b/src/main/java/com/aida/seller/module/order/entity/OrderInfoEntity.java
@@ -57,4 +57,7 @@ public class OrderInfoEntity implements Serializable {
     /** 是否删除：0-否，1-是 */
     @TableLogic
     private Integer deleted;
+
+    /** 交易流水号 */
+    private String paymentId;
 }
diff --git a/src/main/java/com/aida/seller/module/order/service/OrderService.java b/src/main/java/com/aida/seller/module/order/service/OrderService.java
index 4977f4f..de3349b 100644
--- a/src/main/java/com/aida/seller/module/order/service/OrderService.java
+++ b/src/main/java/com/aida/seller/module/order/service/OrderService.java
@@ -75,4 +75,11 @@ public interface OrderService {
      * @return 已购买的商品ID列表
      */
     List<Long> getPurchasedListingIds(List<Long> listingIds, Long buyerId);
+
+    /**
+     * 根据订单号回填交易流水号
+     * @param orderIds 订单编号列表
+     * @param paymentId 交易流水号（仅供内部使用，不对外）
+     */
+    void updatePaymentIdByIds(List<Long> orderIds, Long paymentId);
 }
diff --git a/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java b/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
index 13bf065..3e3f341 100644
--- a/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
+++ b/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
@@ -28,6 +28,7 @@ import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.CollectionUtils;
@@ -43,6 +44,7 @@ import java.util.stream.Collectors;
 /**
  * 订单服务实现
  */
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class OrderServiceImpl extends ServiceImpl<OrderInfoMapper, OrderInfoEntity> implements OrderService {
@@ -296,19 +298,31 @@ public class OrderServiceImpl extends ServiceImpl<OrderInfoMapper, OrderInfoEnti
     @Override
     @Transactional(rollbackFor = Exception.class)
     public void updateOrderStatus(UpdateOrderStatusDTO dto) {
-        if (dto == null || dto.getOrderIds() == null || dto.getOrderIds().isEmpty()) {
-            throw new BusinessException("订单ID列表不能为空");
+        if (dto == null) {
+            throw new BusinessException("订单信息为空");
         }
         if (dto.getStatus() == null) {
             throw new BusinessException("订单状态不能为空");
         }
+        if (dto.getPaymentId() == null && (dto.getOrderIds() == null || dto.getOrderIds().isEmpty())) {
+            throw new BusinessException("订单ID列表不能为空");
+        }
 
+        boolean updated;
         LambdaUpdateWrapper<OrderInfoEntity> updateWrapper = new LambdaUpdateWrapper<>();
-        updateWrapper.in(OrderInfoEntity::getId, dto.getOrderIds())
-                .set(OrderInfoEntity::getStatus, dto.getStatus());
-        boolean updated = this.update(updateWrapper);
+        if (dto.getPaymentId() != null) {
+            updateWrapper.eq(OrderInfoEntity::getPaymentId, dto.getPaymentId())
+                    .set(OrderInfoEntity::getStatus, dto.getStatus());
+        } else {
+            updateWrapper.in(OrderInfoEntity::getId, dto.getOrderIds())
+                    .set(OrderInfoEntity::getStatus, dto.getStatus());
+        }
+        updated = this.update(updateWrapper);
+
         if (!updated) {
             throw new BusinessException("订单不存在或无权修改");
+        } else {
+            log.info("[Order] PaymentId:{} / OrderId:{}, 更新订单状态", dto.getPaymentId(), dto.getOrderIds());
         }
     }
 
@@ -346,4 +360,15 @@ public class OrderServiceImpl extends ServiceImpl<OrderInfoMapper, OrderInfoEnti
                 .distinct()
                 .collect(Collectors.toList());
     }
+
+    @Override
+    public void updatePaymentIdByIds(List<Long> orderIds, Long paymentId) {
+        if (CollectionUtils.isEmpty(orderIds)) {
+            throw new BusinessException("订单ID列表不能为空");
+        }
+        LambdaUpdateWrapper<OrderInfoEntity> updateWrapper = new LambdaUpdateWrapper<>();
+        updateWrapper.in(OrderInfoEntity::getId, orderIds)
+                .set(OrderInfoEntity::getPaymentId, paymentId);
+        this.update(updateWrapper);
+    }
 }
diff --git a/src/main/resources/db/schema.sql b/src/main/resources/db/schema.sql
index 82543be..0b96b44 100644
--- a/src/main/resources/db/schema.sql
+++ b/src/main/resources/db/schema.sql
@@ -18,6 +18,9 @@ CREATE TABLE seller_listing (
     INDEX idx_deleted (deleted)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商品表';
 
+ALTER TABLE seller_listing
+    ADD COLUMN sales_volume INT DEFAULT 0 COMMENT '销量';
+
 -- 商品图片表
 CREATE TABLE seller_listing_image (
     id              BIGINT PRIMARY KEY COMMENT '图片ID',
@@ -93,3 +96,7 @@ CREATE TABLE seller_order_item (
     INDEX idx_listing_id (listing_id),
     INDEX idx_deleted (deleted)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订单商品明细表';
+
+-- 新增 payment_id 字段
+ALTER TABLE seller_orders
+    ADD COLUMN payment_id VARCHAR(64) DEFAULT NULL COMMENT '交易流水号（关联支付表）';
\ No newline at end of file