diff --git a/v2/delivery/client.go b/v2/delivery/client.go
index d83e5161..acb4af66 100644
--- a/v2/delivery/client.go
+++ b/v2/delivery/client.go
@@ -461,3 +461,8 @@ func (c *Client) NewCreateBatchOrdersService() *CreateBatchOrdersService {
 func (c *Client) NewCancelMultiplesOrdersService() *CancelMultiplesOrdersService {
 	return &CancelMultiplesOrdersService{c: c}
 }
+
+// NewCancelMultiplesOrdersService init get position mode service
+func (c *Client) NewDepthService() *DepthService {
+	return &DepthService{c: c}
+}