diff --git a/server-api/config.json.default b/server-api/config.json.default
index 4de3283..67ab923 100644
--- a/server-api/config.json.default
+++ b/server-api/config.json.default
@@ -1,4 +1,5 @@
 {
+    "port": 3000,
     "db": {
         "mysql": {
             "user": "root",
diff --git a/server-api/route/api/errorManager/index.js b/server-api/route/api/errorManager/index.js
index e69de29..3e15992 100644
--- a/server-api/route/api/errorManager/index.js
+++ b/server-api/route/api/errorManager/index.js
@@ -0,0 +1,35 @@
+const fs = require('fs');
+const path = require('path');
+
+class errorManager {
+    constructor(){
+        this.errs = {};
+        this.defLang = 'zh';
+        let err = require(`./language/zh`);
+        this.errs['zh'] = err;
+    }
+
+    getMsg(code, lang = ''){
+        let lng = this.defLang;
+        if(typeof lang == 'string' && lang.trim().length > 0) {
+            let l = lang.split(',');
+            if(l.length > 0){
+                let tmp = l[0].substring(0, 2);
+                if(tmp.trim().length > 0) lng = tmp;
+            }
+        }
+
+        if(!(lng in this.errs)){
+            try{
+                let errs = require(`./language/${lng}`);
+                this.errs[lng] = errs;
+            }catch(err){
+                lng = this.defLang;
+            }
+        }
+        
+        return this.errs[lng][code] || 'errorCode not found';
+    }
+}
+
+module.exports = new errorManager();
\ No newline at end of file
diff --git a/server-api/route/api/errorManager/language/zh.js b/server-api/route/api/errorManager/language/zh.js
index e69de29..2dfa285 100644
--- a/server-api/route/api/errorManager/language/zh.js
+++ b/server-api/route/api/errorManager/language/zh.js
@@ -0,0 +1,13 @@
+module.exports = {
+    // client error
+    CE0000: '請輸入參數',
+    CE0001: '請輸入帳號',
+    CE0002: '請輸入密碼',
+    CE0003: '使用者帳號或密碼錯誤',
+
+    // server error
+    SE0000: '資料查詢失敗',
+    SE0001: '資料新增失敗',
+    SE0002: '資料更新失敗',
+    SE0003: '資料刪除失敗'
+}
\ No newline at end of file
diff --git a/server-api/route/api/index.js b/server-api/route/api/index.js
index b17ae1d..f130b5d 100644
--- a/server-api/route/api/index.js
+++ b/server-api/route/api/index.js
@@ -6,12 +6,13 @@ const koaBody = require('koa-body');
 const mysql = require('../../libs/mysql_pool.js');
 const so = require('../../libs/storeObject');
 const config = require('../../config.json');
+const errorMng = require('./errorManager');
 
 // routes 
 const user_api = require('./user.js');
 
 // api response handler
-router.use(async(c, n) => {
+router.use(async (c, n) => {
     c.db = await mysql.getConn();
     c.syncQuery = (query, param = null) => {
         return new Promise((resolve, reject) => {
@@ -28,26 +29,39 @@ router.use(async(c, n) => {
             }
         })
     }
+    // console.log(c.headers['accept-language'])
     try {
         await n();
+        c.body = {
+            data: c.body,
+            status: 1
+        }
     } catch (e) {
-        console.log(e);
+        let msg = errorMng.getMsg(e, c.headers['accept-language']);
+        c.body = {
+            errorCode: e,
+            message: msg,
+            servErr: c.serr ? c.serr.toString() : '',
+            status: 0
+        }
+        if(e[0] == 'C' || e[0] == 'c') c.status = 400;
+        if(e[0] == 'S' || e[0] == 's') c.status = 500;
     }
     if ('db' in c && typeof c.db == 'object' && 'release' in c.db && typeof c.db.release == 'function') c.db.release();
-    switch (typeof c.body) {
-        case 'undefined':
-            c.body = { errorCode: 'ERR9999', status: 0 };
-            break;
-        case 'string':
-            c.body = { errorCode: c.body, status: 0 };
-            break;
-        default:
-            c.body = {
-                data: c.body,
-                status: 1
-            }
-            break;
-    }
+    // switch (typeof c.body) {
+    //     case 'undefined':
+    //         c.body = { errorCode: 'ERR9999', status: 0 };
+    //         break;
+    //     case 'string':
+    //         c.body = { errorCode: c.body, status: 0 };
+    //         break;
+    //     default:
+    //         c.body = {
+    //             data: c.body,
+    //             status: 1
+    //         }
+    //         break;
+    // }
 })
 
 
@@ -56,10 +70,10 @@ router.all('*', koaBody({
     multipart: true,
     // upload file size 10mb
     maxFieldSize: 10 * 1024 * 1024
-}), async(c, n) => { await n(); })
+}), async (c, n) => { await n(); })
 
 router
-    .get('/', async(c, n) => {
+    .get('/', async (c, n) => {
         c.body = {
             msg: 'API Endpoint'
         };
diff --git a/server-api/route/api/user.js b/server-api/route/api/user.js
index d9290c8..eb44b2a 100644
--- a/server-api/route/api/user.js
+++ b/server-api/route/api/user.js
@@ -9,15 +9,15 @@ const mongo = require('../../libs/mongo_model.js');
 router
     .post('/login', async(c, n) => {
         let arr = c.request.body;
-        if (!arr.data) throw 'C_EDATA';
-        if (!arr.data.account) throw 'C_EACCOUNT';
-        if (!arr.data.password) throw 'C_EPASSWORD';
+        if (!arr.data) throw 'CE0000';
+        if (!arr.data.account) throw 'CE0001';
+        if (!arr.data.password) throw 'CE0002';
         try {
             let user = await c.syncQuery('select `uid`,`account`,`password`,`name`,`email` from ??.?? where `account` = ?', ['lora', 'user', arr.data.account])
 
-            if (user.length == 0) throw 'user not exists';
+            if (user.length == 0) throw 'CE0003';
 
-            if (!crypto.comparePass(arr.data.password, user[0].password)) throw 'password not match';
+            if (!crypto.comparePass(arr.data.password, user[0].password)) throw 'CE0003';
 
             delete user[0].password;
 
@@ -25,7 +25,9 @@ router
                 record: user
             }
         } catch (err) {
-            throw 'DB Query Error';
+            if(typeof err == 'string') throw err;
+            c.serr = err;
+            throw 'SE0000';
         }
 
         let u = c.body.record[0];