diff --git a/supply/channel/order.go b/supply/channel/order.go
index 976e974..e07a39d 100644
--- a/supply/channel/order.go
+++ b/supply/channel/order.go
@@ -279,6 +279,16 @@ func (o *order) Detail(ctx context.Context, channelId string, orderSn string) (r
 	return
 }
 
+// SubDetail @Title 子订单详情
+func (o *order) SubDetail(ctx context.Context, channelId, orderSn string) (reply OrderItem, err error) {
+	xClient, err := client.GetClient(o)
+	if err != nil {
+		return
+	}
+	err = xClient.Call(context.WithValue(ctx, share.ReqMetaDataKey, map[string]string{"channelId": channelId}), "SubDetail", orderSn, &reply)
+	return
+}
+
 // Trajectory @Title 获取订单物流信息
 func (o *order) Trajectory(ctx context.Context, channelId string, orderSn string) (reply []_interface.ReplyTrajectory, err error) {
 	xClient, err := client.GetClient(o)