diff --git a/lib/common/client/initOptions.js b/lib/common/client/initOptions.js
index 297a5924d..e43ef2b54 100644
--- a/lib/common/client/initOptions.js
+++ b/lib/common/client/initOptions.js
@@ -32,6 +32,9 @@ module.exports = function (options) {
   if (options.bucket) {
     _checkBucketName(options.bucket);
   }
+  if (!options.timeout) {
+    delete options.timeout;
+  }
   const opts = Object.assign(
     {
       region: 'oss-cn-hangzhou',