diff --git a/src/main/java/org/jullaene/walkmong_back/api/member/dto/res/LoginRes.java b/src/main/java/org/jullaene/walkmong_back/api/member/dto/res/LoginRes.java
index c423f16..22c2b1f 100644
--- a/src/main/java/org/jullaene/walkmong_back/api/member/dto/res/LoginRes.java
+++ b/src/main/java/org/jullaene/walkmong_back/api/member/dto/res/LoginRes.java
@@ -9,4 +9,5 @@ public class LoginRes {
     private String accessToken;
 
     private String refreshToken;
+    private Long memberId;
 }
diff --git a/src/main/java/org/jullaene/walkmong_back/api/member/service/AuthService.java b/src/main/java/org/jullaene/walkmong_back/api/member/service/AuthService.java
index 1874275..867d4ef 100644
--- a/src/main/java/org/jullaene/walkmong_back/api/member/service/AuthService.java
+++ b/src/main/java/org/jullaene/walkmong_back/api/member/service/AuthService.java
@@ -59,7 +59,7 @@ public LoginRes login(LoginReq loginReq) {
                 TimeUnit.MILLISECONDS
         );
 
-        return new LoginRes(accessToken, refreshToken);
+        return new LoginRes(accessToken, refreshToken, member.getMemberId());
     }
 
     /**
@@ -146,9 +146,10 @@ public LoginRes reissueTokens(String refreshToken) {
         // 새로운 Access Token 생성
         String newAccessToken = jwtTokenUtil.createToken(email);
 
+        Member member = findByAccountEmail(email);
 
         // 반환
-        return new LoginRes(newAccessToken, refreshToken);
+        return new LoginRes(newAccessToken, refreshToken, member.getMemberId());
     }
 
 }