diff --git a/.gitignore b/.gitignore
index 3c3629e..0b4836b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules
+server-api/config.json
\ No newline at end of file
diff --git a/server-api/app.js b/server-api/app.js
index 5f5e7d7..adb4b65 100644
--- a/server-api/app.js
+++ b/server-api/app.js
@@ -2,6 +2,19 @@ const koa = require('koa');
 const path = require('path');
 const fs = require('fs');
 
+// Load config
+const config = require('./config.json');
+// custom modules
+const mysql = require('./libs/mysql_pool');
+
+// init mysql connection pool
+mysql.database = config.db.mysql.dbname;
+mysql.host = config.db.mysql.host;
+mysql.user = config.db.mysql.user;
+mysql.password = config.db.mysql.pass;
+mysql.port = config.db.mysql.port;
+mysql.createPool();
+
 // Koa Middleware
 const session = require('koa-session');
 const Router = require('koa-router');
@@ -40,6 +53,12 @@ app.use(session({
 app.use(router.routes());
 app.use(router.allowedMethods());
 
+// load other route
+const api_route = require('./route/api');
+
+// set other route
+router.use("/api", api_route.routes());
+
 router.get('/', async(c, n) => {
     c.body = 'Get root';
 });
\ No newline at end of file
diff --git a/server-api/config.json.default b/server-api/config.json.default
new file mode 100644
index 0000000..4de3283
--- /dev/null
+++ b/server-api/config.json.default
@@ -0,0 +1,18 @@
+{
+    "db": {
+        "mysql": {
+            "user": "root",
+            "pass": "",
+            "host": "localhost",
+            "port": 3306,
+            "dbname": "lora"
+        },
+        "mongo": {
+            "user": "",
+            "pass": "",
+            "host": "localhost",
+            "port": 27017,
+            "dbname": "lora"
+        }
+    }
+}
\ No newline at end of file
diff --git a/server-api/libs/crypto.js b/server-api/libs/crypto.js
new file mode 100644
index 0000000..09e705c
--- /dev/null
+++ b/server-api/libs/crypto.js
@@ -0,0 +1,31 @@
+var crypto = require('crypto');
+
+var random = (len = 32) => {
+    var buf = crypto.randomBytes(len);
+    return buf.toString("hex");
+}
+
+var sha256 = (str) => {
+    return crypto.createHash("sha256").update(str).digest('base64');
+}
+
+var genPassHash = (str) => {
+    var hash = random(16);
+    var pass = sha256(str + hash);
+    return `$${hash}$${pass}`;
+}
+
+var comparePass = (plain, hash) => {
+    var match = hash.match(/^\$(.+?)\$(.+)$/);
+    if (match == null || match.length < 3 || !match[1] || !match[2]) return false;
+    var pass = sha256(plain + match[1]);
+    if (pass == match[2]) return true;
+    return false;
+}
+
+module.exports = {
+    random,
+    sha256,
+    genPassHash,
+    comparePass
+}
\ No newline at end of file
diff --git a/server-api/libs/mysql_pool.js b/server-api/libs/mysql_pool.js
new file mode 100644
index 0000000..2c36334
--- /dev/null
+++ b/server-api/libs/mysql_pool.js
@@ -0,0 +1,119 @@
+const mysql = require('mysql');
+
+class MySQLPool {
+    constructor() {
+        this._user = '';
+        this._password = '';
+        this._host = '';
+        this._port = 3306;
+        this._database = '';
+        this._socketPath = ''
+        this._pool = null;
+        this.autoclose = false;
+        this._useSocket = false;
+    }
+
+    createPool() {
+        let json = {
+            connectionLimit: 30,
+            user: this._user,
+            password: this._password,
+            host: this._host,
+            port: this._port,
+            socketPath: this._socketPath
+        };
+        if (this._useSocket) {
+            delete json.host;
+            delete json.port;
+        } else {
+            delete json.socketPath;
+        }
+        this._pool = mysql.createPool(json);
+    }
+
+    async getConn() {
+        return new Promise((resolve, reject) => {
+            this._pool.getConnection((err, conn) => {
+                if (err) return reject(err);
+                return resolve(conn)
+            })
+        })
+    }
+
+    formatQuery(query, arg) {
+        return mysql.format(query, arg);
+    }
+
+    escape(val) {
+        return mysql.escape(val);
+    }
+
+    recordPage(rows, page, maxPage) {
+        if (!page || !isFinite(page) || page < 1) page = 1;
+
+        let totalpage = Math.ceil(rows / maxPage);
+
+        let prevpage = page - 1;
+        let nextpage = page + 1;
+
+        if (prevpage < 1) prevpage = 1;
+        if (nextpage > totalpage) nextpage = totalpage;
+
+        let rec_start = (page - 1) * maxPage + 1
+        let rec_end = (rec_start + maxPage - 1);
+        if (rec_end > rows) rec_end = rows;
+
+        let json = {
+            rec_start,
+            rec_end,
+            total: rows,
+            prevpage,
+            nextpage,
+            totalpage,
+            page
+        };
+
+        return json;
+    }
+
+    set user(str) { this._user = str; }
+    set host(str) { this._host = str; }
+    set password(str) { this._password = str; }
+    set port(str) { this._port = str; }
+    set database(str) { this._database = str; }
+}
+
+
+// let Pool = ((opts) => {
+//     let defOpts = {
+//         user: 'root',
+//         pass: '',
+//         host: 'localhost',
+//         port: 3306,
+//         socket: '/var/lib/mysql/mysql.sock',
+//         useSocket: false
+//     }
+
+//     let opt = {
+//         user: opts.user || defOpts.user,
+//         pass: opts.pass || defOpts.pass,
+//         host: opts.host || defOpts.host,
+//         port: opts.port || defOpts.port,
+//         socket: opts.socket || defOpts.socket,
+//         useSocket: opts.useSocket || defOpts.useSocket
+//     };
+
+//     let pool = new MySQLPool();
+
+//     pool._host = opt.host;
+//     pool._password = opt.pass;
+//     pool._port = opt.port;
+//     pool._user = opt.user;
+//     pool._socket = opt.socket;
+//     pool._useSocket = opt.useSocket;
+
+//     pool.createPool();
+//     return pool
+// })()
+
+module.exports = new MySQLPool();
\ No newline at end of file
diff --git a/server-api/package.json b/server-api/package.json
index 6f77f95..ec7439a 100644
--- a/server-api/package.json
+++ b/server-api/package.json
@@ -10,6 +10,7 @@
     "koa-body": "^2.0.1",
     "koa-router": "^7.2.0",
     "koa-session": "^5.0.0",
-    "koa-static": "^3.0.0"
+    "koa-static": "^3.0.0",
+    "mysql": "^2.13.0"
   }
 }
diff --git a/server-api/route/api/index.js b/server-api/route/api/index.js
new file mode 100644
index 0000000..871a3c5
--- /dev/null
+++ b/server-api/route/api/index.js
@@ -0,0 +1,8 @@
+const Router = require('koa-router');
+const router = new Router();
+
+router.get('/', (c, n) => {
+    c.body = "API Root";
+})
+
+module.exports = router;
\ No newline at end of file
diff --git a/server-api/yarn.lock b/server-api/yarn.lock
index 25e480e..9dafa84 100644
--- a/server-api/yarn.lock
+++ b/server-api/yarn.lock
@@ -13,6 +13,10 @@ any-promise@^1.0.0, any-promise@^1.1.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
 
+bignumber.js@3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-3.1.2.tgz#f3bdb99ad5268a15fc1f0bed2fb018e2693fe236"
+
 bytes@2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-2.4.0.tgz#7d97196f9d5baf7f6935e25985549edd2a6c2339"
@@ -45,6 +49,10 @@ cookies@~0.7.0:
     depd "~1.1.0"
     keygrip "~1.0.1"
 
+core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+
 crc@^3.4.4:
   version "3.4.4"
   resolved "https://registry.yarnpkg.com/crc/-/crc-3.4.4.tgz#9da1e980e3bd44fc5c93bf5ab3da3378d85e466b"
@@ -123,7 +131,7 @@ inflation@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/inflation/-/inflation-2.0.0.tgz#8b417e47c28f925a45133d914ca1fd389107f30f"
 
-inherits@2.0.3:
+inherits@2.0.3, inherits@~2.0.1:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
 
@@ -252,6 +260,14 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+mysql@^2.13.0:
+  version "2.13.0"
+  resolved "https://registry.yarnpkg.com/mysql/-/mysql-2.13.0.tgz#998f1f8ca46e2e3dd7149ce982413653986aae47"
+  dependencies:
+    bignumber.js "3.1.2"
+    readable-stream "1.1.14"
+    sqlstring "2.2.0"
+
 mz@^2.3.1:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/mz/-/mz-2.6.0.tgz#c8b8521d958df0a4f2768025db69c719ee4ef1ce"
@@ -308,6 +324,15 @@ raw-body@^2.2.0:
     iconv-lite "0.4.15"
     unpipe "1.0.0"
 
+readable-stream@1.1.14:
+  version "1.1.14"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 resolve-path@^1.3.1:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/resolve-path/-/resolve-path-1.3.3.tgz#4d83aba6468c2b8e632a575e3f52b0fa0dbe1a5c"
@@ -323,10 +348,18 @@ setprototypeof@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.0.3.tgz#66567e37043eeb4f04d91bd658c0cbefb55b8e04"
 
+sqlstring@2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/sqlstring/-/sqlstring-2.2.0.tgz#c3135c4ea8abcd7e7ee741a4966a891d86a4f191"
+
 "statuses@>= 1.3.1 < 2", statuses@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
 
+string_decoder@~0.10.x:
+  version "0.10.31"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
+
 thenify-all@^1.0.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/thenify-all/-/thenify-all-1.6.0.tgz#1a1918d402d8fc3f98fbf234db0bcc8cc10e9726"