diff --git a/acme/README.md b/acme/README.md
index af2c77f..ec6922b 100644
--- a/acme/README.md
+++ b/acme/README.md
@@ -80,4 +80,14 @@
 
 ssl_certificate /etc/letsencrypt/live/nr.woyue.org/fullchain.pem
 
-那么，docker mount的路径就应该是：-v /srv/certbot/conf:/etc/letsencrypt
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+那么，docker mount的路径就应该是：-v /srv/certbot/conf:/etc/letsencrypt
+
+## 应用实例
+
+centos2上的证书强制刷新：
+
+acme.sh --force --debug --issue --dns dns_ali -d nr.woyue.org -d *.nr.woyue.org
+
+然后，重启restart nginx的docker 容器:
+
+docker restart xxx
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