diff --git a/orangepi3B安装系统到SSD.md b/orangepi3B安装系统到SSD.md
index 88d436e..843c06e 100644
--- a/orangepi3B安装系统到SSD.md
+++ b/orangepi3B安装系统到SSD.md
@@ -67,6 +67,20 @@ df -h
 
 
 
+### 修改MAC地址
+```
+sudo nano /etc/netplan/***.yaml
+```
+```
+network:
+  version: 2
+  renderer: NetworkManager
+  ethernets:
+    eth0:
+      macaddress: "00:11:22:33:44:E9"
+      dhcp4: true
+```
+