diff --git a/internal/logic/file.go b/internal/logic/file.go
index 087e440..0768ed5 100644
--- a/internal/logic/file.go
+++ b/internal/logic/file.go
@@ -94,7 +94,7 @@ func (f *File) Upload(req *dci.GetUploadUrlRequest) (res *dci.GetUploadUrlRespon
 	if tea.ToString(getUploadUrlResponse.ResultCode) != "OK" {
 		return res, errCommon.ReturnError(errors.New(res.ResultMsg), err.Error(), "获取授权访问OSS链接 错误:")
 	}
-	if tea.ToString(getUploadUrlResponse.Url) == "" || tea.ToString(getUploadUrlResponse.FileId) == "" {
+	if getUploadUrlResponse.Url == nil || getUploadUrlResponse.FileId == nil {
 		return res, errCommon.ReturnError(errors.New(res.ResultMsg), err.Error(), "获取授权访问OSS链接 错误:")
 	}