diff --git a/src/routers/parent/authRouter.ts b/src/routers/parent/authRouter.ts
index 48e8e60..c9b346f 100644
--- a/src/routers/parent/authRouter.ts
+++ b/src/routers/parent/authRouter.ts
@@ -1,6 +1,7 @@
 import { Router, Request, Response } from 'express';
 import { registUser, loginUser } from '@src/services/parent/authService';
 import Logger from '@src/logger';
+import { TokenResponse } from '@src/models/Token';
 
 const router = Router();
 const logger = new Logger();
@@ -9,10 +10,8 @@ logger.setTag('authRouter');
 router.post('/register', (req: Request, res: Response) => {
     const { email, password } = req.body;
     registUser(email, password)
-        .then((token) => {
-            res.json({
-                "accessToken": token
-            });
+        .then((tokenResponse: TokenResponse) => {
+            res.status(201).json(tokenResponse);
         })
         .catch((err) => {
             res.status(401).json({ message: "ユーザー登録失敗: すでに登録されているemailです" });
diff --git a/src/services/parent/authService.ts b/src/services/parent/authService.ts
index a84c107..66bcc51 100644
--- a/src/services/parent/authService.ts
+++ b/src/services/parent/authService.ts
@@ -3,12 +3,13 @@ import bcrypt from "bcryptjs";
 import { issueTokenByUserId } from "@src/utils/tokenUtils";
 import { createHomeGroup } from "@src/services/homeGroupService";
 import Logger from "@src/logger";
+import { TokenResponse } from "@src/models/Token";
 
 const logger = new Logger();
 logger.setTag('authService');
 
-async function registUser(email: string, password: string, homeGroupId?: string): Promise<String> {
-    
+async function registUser(email: string, password: string, homeGroupId?: string): Promise<TokenResponse> {
+
     const hashedPassword = bcrypt.hashSync(password, 10);
 
     if (!homeGroupId) { // TODO: 作成失敗したときにHomeGroupだけ残るのを防ぐ
@@ -40,7 +41,10 @@ async function registUser(email: string, password: string, homeGroupId?: string)
     });
 
     const user = await registUser;
-    return issueTokenByUserId(user.id);
+    const response: TokenResponse = {
+        accessToken: await issueTokenByUserId(user.id)
+    };
+    return Promise.resolve(response)
 }
 
 async function loginUser(email: string, password: string): Promise<String | null> {
@@ -49,10 +53,10 @@ async function loginUser(email: string, password: string): Promise<String | null
             email: email
         }
     });
-    if(!user) {
+    if (!user) {
         return null;
     }
-    if(bcrypt.compareSync(password, user.password)) {
+    if (bcrypt.compareSync(password, user.password)) {
         return issueTokenByUserId(user.id);
     } else {
         return null;