diff --git a/src/hooks/useUpload.ts b/src/hooks/useUpload.ts
index 388704e..cc79d37 100644
--- a/src/hooks/useUpload.ts
+++ b/src/hooks/useUpload.ts
@@ -128,7 +128,7 @@ export function useUpload() {
       const randomNum = Math.floor(Math.random() * 10000);
       const timestamp = new Date().format('yyyyMMddhhmmss');
       const extension = file.name.split(".").pop();
-      return `${policy.key}/${timestamp}-${randomNum}.${extension}`;
+      return `${policy.key}${timestamp}-${randomNum}.${extension}`;
     }
 
     const client = new OSS({