diff --git a/utils/image/image_format.go b/utils/image/image_format.go
index d307b597..51f53f3d 100644
--- a/utils/image/image_format.go
+++ b/utils/image/image_format.go
@@ -2,7 +2,7 @@ package image
 
 // 校验上传图片类型合法不合法
 func CheckUploadImageFormat(fileName string) bool {
-	switch ext {
+	switch fileName {
 	case "jpg", "png", "fbx", "glb", "hdr", "jpeg", "svg", "pdf", "psd", "webp", "gif":
 		return true
 	}