diff --git a/alidrive/req_bean.go b/alidrive/req_bean.go
index a1607ee8..3160f9e3 100644
--- a/alidrive/req_bean.go
+++ b/alidrive/req_bean.go
@@ -57,6 +57,7 @@ type GetTokenReq struct {
 // refresh_token request bean
 type RefreshTokenReq struct {
 	RefreshToken string `json:"refresh_token"`
+	GrantType    string `json:"grant_type"`
 }
 
 // office_preview_url request bean
@@ -70,4 +71,4 @@ type OfficePreviewUrlReq struct {
 type VideoPreviewUrlReq struct {
 	DriveId     string `json:"drive_id"`
 	FileId      string `json:"file_id"`
-}
\ No newline at end of file
+}