diff --git a/docs/setup_by_ubuntu18.rst b/docs/setup_by_ubuntu18.rst
index 2cf23b4af28ac1a0d44032b4ad7bc0a8637bd814..d97c7390bec0d690a4efa8ffd3511fa4942e4540 100644
--- a/docs/setup_by_ubuntu18.rst
+++ b/docs/setup_by_ubuntu18.rst
@@ -12,7 +12,7 @@ Ubuntu 18.04 安装文档
 环境
 ~~~~~~~
 
--  系统: CentOS 7
+-  系统: Ubuntu 18.04
 -  IP: 192.168.244.144
 -  目录: /opt
 -  数据库: mariadb