diff --git a/routes/ipinfo.js b/routes/ipinfo.js
index 02818ed..81b8ec1 100644
--- a/routes/ipinfo.js
+++ b/routes/ipinfo.js
@@ -3,6 +3,7 @@ const router = express.Router();
 const libqqwry = require("lib-qqwry");
 const dns = require("dns");
 const qqwry = libqqwry(); //初始化IP库解析器
+const dnspod = require("../utils/dnspod");
 
 /* GET home page. */
 router.get("/", function (req, res) {
@@ -10,17 +11,57 @@ router.get("/", function (req, res) {
 	dns.lookup(ip, (err, address) => {
 		let ipL;
 		if (err) {
-			ipL = { "ip": ip, "msg": "域名解析IP失败" };
+			ipL = {
+				"ip": ip,
+				"msg": "域名解析IP失败"
+			};
 		} else {
 			ip = address;
 			try {
 				ipL = qqwry.searchIP(ip); //查询IP信息
 			} catch (e) {
-				ipL = { "ip": ip, "msg": e };
+				ipL = {
+					"ip": ip,
+					"msg": e
+				};
 			}
 		}
 		res.json(ipL);
 	});
 });
 
+router.get("/ddns", async function (req, res) {
+	let ip = req.ip,
+		subdomain = req.query.subdomain;
+	if (ip.substr(0, 7) === "::ffff:") {
+		ip = ip.substr(7);
+	}
+	if (!subdomain || subdomain === "") {
+		res.json({ msg: "请提供subdomain参数" });
+		return;
+	}
+	const record_type = (ip.indexOf(":") !== -1)? "AAAA": "A";
+
+	const records = await dnspod.get_record("home999.cc", subdomain, record_type);
+	if (!records || records.length !== 1) {
+		res.json({ msg: "获取不到相关记录，或者记录条数不是1。" });
+		return;
+	}
+	const record = records[0];
+	if (record.value === ip) {
+		res.json({ msg: "不需要更新IP" });
+	} else {
+		record.value = ip;
+		const status = await dnspod.update_record("home999.cc",record);
+		if (status.code==="1") {
+			res.json({msg: "更新成功" ,ip});
+		} else {
+			res.json({
+				msg: "更新失败",
+				status
+			});
+		}
+	}
+});
+
 module.exports = router;
diff --git a/schedule/cf2dns.js b/schedule/cf2dns.js
index 22a9c57..f2c5348 100644
--- a/schedule/cf2dns.js
+++ b/schedule/cf2dns.js
@@ -1,5 +1,5 @@
 const axios = require("axios");
-const dnspod = require("./dnspod");
+const dnspod = require("../utils/dnspod");
 
 const KEY = "o1zrmHAF";
 const DOMAINS = {
diff --git a/schedule/dnspod.js b/utils/dnspod.js
similarity index 85%
rename from schedule/dnspod.js
rename to utils/dnspod.js
index c722a99..7a45ee2 100644
--- a/schedule/dnspod.js
+++ b/utils/dnspod.js
@@ -6,12 +6,13 @@ const instance = axios.create({
 	baseURL: "https://dnsapi.cn"
 });
 
-async function get_record(domain, subdomain) {
+async function get_record(domain, subdomain, recordtype) {
 	const api = "/Record.List";
 	const data = querystring.stringify({
 		"domain": domain,
 		"sub_domain": subdomain,
 		"login_token": token,
+		"record_type": recordtype,
 		"format": "json"
 	});
 	const res = await instance.post(api, data);
@@ -32,7 +33,7 @@ async function update_record(domain, record) {
 		"format": "json",
 	});
 	const res = await instance.post(api, data);
-	return res.data;
+	return res.data.status;
 }
 
 async function add_record(domain, record) {
@@ -67,14 +68,8 @@ async function del_record(domain, record) {
 module.exports = {get_record, update_record, add_record, del_record};
 
 if (!module.parent) {
-	get_record("home999.cc", "gd").then(res => {
+	get_record("home999.cc", "n1","AAAA").then(res => {
 		console.log(res);
-		for (const record of res) {
-			if (record.line !== "默认") {
-				del_record("home999.cc", record).then(res => {
-					console.log(res);
-				});
-			}
-		}
 	});
 }
+