diff --git a/README.md b/README.md
index b762268e..79b5a52f 100644
--- a/README.md
+++ b/README.md
@@ -254,6 +254,7 @@ You don't have do anything manually!
 7. PowerDNS API
 8. lexicon dns api: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
    (DigitalOcean, DNSimple, DnsMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
+9. LuaDNS.com API
 
 ##### More APIs are coming soon...
 
diff --git a/dnsapi/README.md b/dnsapi/README.md
index 94603154..19769111 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -136,4 +136,22 @@ For more details, please check our sample script: [dns_myapi.sh](dns_myapi.sh)
 
 https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
 
+## Use LuaDNS domain API
+
+Get your API token at https://api.luadns.com/settings
+
+```
+export LUA_Key="sdfsdfsdfljlbjkljlkjsdfoiwje"
+
+export LUA_Email="xxxx@sss.com"
+
+```
+
+To issue a cert:
+```
+acme.sh   --issue   --dns dns_lua --dnssleep 3  -d example.com  -d www.example.com
+```
+
+The `LUA_Key` and `LUA_Email`  will be saved in `~/.acme.sh/account.conf`, and will be reused when needed.
+