diff --git a/README.md b/README.md
index 901257aaeb36b9885fd7be1c4138261e05175fd5..d8ed985b9f63776a2cdb59e9a56877fc5f9b950d 100755
--- a/README.md
+++ b/README.md
@@ -52,8 +52,6 @@ sudo apt install -y libvirt0 libvirt-daemon qemu virt-manager bridge-utils libvi
 进入虚拟机后，由于欧拉镜像不自带gui界面，因此我们需要通过以下操作自行安装gui
 
 ```bash
-进入/etc/yum.repos.d/目录，在目录下依次运行以下命令
-yum update
 yum install dde
 systemctl set-default graphical.target
 reboot