diff --git a/functions/api/routes/auth/authTestGET.js b/functions/api/routes/auth/authTestGET.js
new file mode 100644
index 0000000..9f6051b
--- /dev/null
+++ b/functions/api/routes/auth/authTestGET.js
@@ -0,0 +1,30 @@
+const functions = require('firebase-functions');
+const admin = require('firebase-admin');
+const util = require('../../../lib/util');
+const statusCode = require('../../../constants/statusCode');
+const responseMessage = require('../../../constants/responseMessage');
+const db = require('../../../db/db');
+const { userDB } = require('../../../db');
+const jwtHandlers = require('../../../lib/jwtHandlers');
+
+
+module.exports = async (req, res) => {
+  const user = req.user;
+  console.log(user);
+  if (!user) return res.status(statusCode.BAD_REQUEST).send(util.fail(statusCode.BAD_REQUEST, responseMessage.NO_USER));
+  
+  let client;
+
+  try {
+    client = await db.connect();
+
+    res.status(statusCode.OK).send(util.success(statusCode.OK, "token -> user 활용법", user));
+  } catch (error) {
+    console.log(error);
+    functions.logger.error(`[ERROR] [${req.method.toUpperCase()}] ${req.originalUrl}`, `[CONTENT] ${error}`);
+
+    res.status(statusCode.INTERNAL_SERVER_ERROR).send(util.fail(statusCode.INTERNAL_SERVER_ERROR, responseMessage.INTERNAL_SERVER_ERROR));
+  } finally {
+    client.release();
+  }
+};
\ No newline at end of file
diff --git a/functions/api/routes/auth/index.js b/functions/api/routes/auth/index.js
index 8ca08f5..86bb179 100644
--- a/functions/api/routes/auth/index.js
+++ b/functions/api/routes/auth/index.js
@@ -1,7 +1,10 @@
 const express = require('express');
 const router = express.Router();
 const uploadImage = require('../../../middlewares/uploadImage');
+const { checkUser } = require('../../../middlewares/auth');
 
 router.post('/signup',uploadImage, require('./authSignupPOST'));
+// router.get('/test', checkUser, require('./authTestGET'));
+router.get('/test', checkUser, require('./authTestGET'));
 
 module.exports = router;
diff --git a/functions/db/user.js b/functions/db/user.js
index fe08330..0f6e475 100644
--- a/functions/db/user.js
+++ b/functions/db/user.js
@@ -1,6 +1,18 @@
 const _ = require('lodash');
 const convertSnakeToCamel = require('../lib/convertSnakeToCamel');
 
+const getUserById = async (client, userId) => {
+  const { rows } = await client.query(
+    `
+    SELECT * FROM spark.user u
+    WHERE user_id = $1
+      AND is_deleted = FALSE
+    `,
+    [userId],
+  );
+  return convertSnakeToCamel.keysToCamel(rows[0]);
+}
+
 const getUserBySocialId = async (client, socialId) => {
   const { rows } = await client.query(
     `
@@ -27,4 +39,4 @@ const addUser = async (client, socialId, nickname, profileImg) => {
   return convertSnakeToCamel.keysToCamel(rows[0]);
 };
 
-module.exports = { getUserBySocialId, addUser };
+module.exports = { getUserById, getUserBySocialId, addUser };
diff --git a/functions/lib/jwtHandlers.js b/functions/lib/jwtHandlers.js
index bcf9b3f..e5a501a 100644
--- a/functions/lib/jwtHandlers.js
+++ b/functions/lib/jwtHandlers.js
@@ -1,8 +1,6 @@
 const functions = require('firebase-functions');
 const jwt = require('jsonwebtoken');
 const { TOKEN_INVALID, TOKEN_EXPIRED } = require('../constants/jwt');
-
-// JWT를 발급/인증할 떄 필요한 secretKey를 설정합니다. 값은 .env로부터 불러옵니다.
 const secretKey = process.env.JWT_SECRET;
 const options = {
   algorithm: 'HS256',
@@ -10,46 +8,41 @@ const options = {
   issuer: 'wesopt',
 };
 
-// id, email, name, idFirebase가 담긴 JWT를 발급합니다.
 const sign = (user) => {
-  const payload = {
-    id: user.id,
-    email: user.email,
-    name: user.name || null,
-    idFirebase: user.idFirebase,
+  const payload =  {
+    userId: user.userId
   };
 
   const result = {
     accesstoken: jwt.sign(payload, secretKey, options),
+    // refreshToken: jwt.sign(payload, secretKey, refreshOptions),
   };
   return result;
 };
 
-// JWT를 해독하고, 해독한 JWT가 우리가 만든 JWT가 맞는지 확인합니다 (인증).
 const verify = (token) => {
   let decoded;
   try {
+    // console.log("token:",token);
     decoded = jwt.verify(token, secretKey);
   } catch (err) {
     if (err.message === 'jwt expired') {
       console.log('expired token');
-      functions.logger.error('expired token');
       return TOKEN_EXPIRED;
     } else if (err.message === 'invalid token') {
+      console.log("decoded:", decoded);
       console.log('invalid token');
-      functions.logger.error('invalid token');
+      console.log(TOKEN_INVALID);
       return TOKEN_INVALID;
     } else {
       console.log('invalid token');
-      functions.logger.error('invalid token');
       return TOKEN_INVALID;
     }
   }
-  // 해독 / 인증이 완료되면, 해독된 상태의 JWT를 반환합니다.
   return decoded;
 };
 
 module.exports = {
   sign,
   verify,
-};
+};
\ No newline at end of file