diff --git a/linux基础/acm.sh生成免费证书.md b/linux基础/acm.sh生成免费证书.md
index ab7742b..8d32130 100644
--- a/linux基础/acm.sh生成免费证书.md
+++ b/linux基础/acm.sh生成免费证书.md
@@ -1,9 +1,14 @@
+### 安装acm.sh
+```
+curl https://get.acme.sh | sh
+```
 ### 切换ca
 ```
 # 默认ca为zerossl
 acme.sh --set-default-ca --server letsencrypt
 ```
-### 生成证书
+### 生成并安装证书
 ```bash
-acme.sh --installcert --issue --dns dns_ali -d xhupo.com -d *.xhupo.com  --key-file /item/nginx/conf/ssl/xhupo/xhupo.key --fullchain-file /item/nginx/conf/ssl/xhupo/xhupo.pem
+# 已配置Ali_Key与Ali_Secret
+acme.sh --install-cert --issue --dns dns_ali -d xhupo.com -d *.xhupo.com  --key-file /item/nginx/conf/ssl/xhupo/xhupo.key --fullchain-file /item/nginx/conf/ssl/xhupo/xhupo.pem
 ```
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