diff --git a/src/controller/auth.ts b/src/controller/auth.ts
index 89fc302..60ce275 100644
--- a/src/controller/auth.ts
+++ b/src/controller/auth.ts
@@ -100,24 +100,23 @@ const postSignupController = async (req: Request, res: Response) => {
 
 const postLoginController = async (req: Request, res: Response) => {
   try {
-    const { email, password } = req.body;
-    const data = await authService.postLoginService(email, password);
+    const resData = await authService.postLoginService(req.body);
 
-    if (data === -1) {
+    if (resData === constant.NULL_VALUE) {
       response.basicResponse(
         res,
         returnCode.BAD_REQUEST,
         false,
         "필요한 값이 없습니다."
       );
-    } else if (data === -2) {
+    } else if (resData === -100) {
       response.basicResponse(
         res,
         returnCode.NOT_FOUND,
         false,
         "존재하지 않는 이메일입니다."
       );
-    } else if (data === -3) {
+    } else if (resData === -101) {
       response.basicResponse(
         res,
         returnCode.BAD_REQUEST,
@@ -125,13 +124,12 @@ const postLoginController = async (req: Request, res: Response) => {
         "비밀번호가 일치하지 않습니다."
       );
     } else {
-      const { nickname, token } = data;
       response.dataResponse(
         res,
         returnCode.OK,
         "장서현의 첫 api 소중히 다뤄주세요 💋",
         true,
-        data
+        resData
       );
     }
   } catch (err) {
@@ -146,7 +144,7 @@ const postLoginController = async (req: Request, res: Response) => {
   }
 };
 const authController = {
-    postSignupController,
+  postSignupController,
   postLoginController,
 };
 
diff --git a/src/service/auth.ts b/src/service/auth.ts
index e249a6d..594addd 100644
--- a/src/service/auth.ts
+++ b/src/service/auth.ts
@@ -97,22 +97,22 @@ const postSignupService = async ({ email, nickname, password }) => {
  *  @access public
  */
 
-const postLoginService = async (email: string, password: string) => {
+const postLoginService = async ({ email, password }) => {
   // 요청 바디 부족
   if (!email || !password) {
-    return -1;
+    return constant.NULL_VALUE;
   }
 
   // 존재하지 않는 이메일
   const user = await User.findOne({ where: { email: email } });
   if (!user) {
-    return -2;
+    return -100;
   }
 
   // 비밀번호 일치 X
   const isMatch = await bcrypt.compare(password, user.password);
   if (!isMatch) {
-    return -3;
+    return -101;
   }
 
   // 성공 시