diff --git a/rest/rest.go b/rest/rest.go
index 867cfec..e22d9a0 100644
--- a/rest/rest.go
+++ b/rest/rest.go
@@ -158,7 +158,7 @@ func (this *RESTAPI) SetTimeOut(timeout time.Duration) *RESTAPI {
 }
 
 // GetCandles 获取蜡烛图数据
-func (this *RESTAPI) GetCandles(ctx context.Context, uri string, param *map[string]interface{}) (res *RESTAPIResult, err error) {
+func (this *RESTAPI) GetCandles(ctx context.Context, uri string, param *map[string]interface{}) (res ResponseData, err error) {
 	this.Method = GET
 	this.Uri = uri