diff --git a/docs/uniCloud/uni-cloud-s2s.md b/docs/uniCloud/uni-cloud-s2s.md
index 3d2de9580da9bd0daaff50439c6b00985d995a33..4af8fc3251ffc2a47020bdb7a84afeb2fbb6c029 100644
--- a/docs/uniCloud/uni-cloud-s2s.md
+++ b/docs/uniCloud/uni-cloud-s2s.md
@@ -213,7 +213,7 @@ try {
     body: 'a=1&b=2&c=3'
   })
 } catch (e) {
-  if(e.subject === 'uni-cloud-s2s' && e.errCode === 51000) {
+  if(e.errSubject === 'uni-cloud-s2s' && e.errCode === 51000) {
     throw new Error('非法请求') // 判断为验证未通过，返回自定义的错误
   }
   throw e