diff --git a/growthookServer/src/main/java/com/example/growthookserver/api/member/auth/service/Impl/AuthServiceImpl.java b/growthookServer/src/main/java/com/example/growthookserver/api/member/auth/service/Impl/AuthServiceImpl.java
index 62f1fdf..8c2afc5 100644
--- a/growthookServer/src/main/java/com/example/growthookserver/api/member/auth/service/Impl/AuthServiceImpl.java
+++ b/growthookServer/src/main/java/com/example/growthookserver/api/member/auth/service/Impl/AuthServiceImpl.java
@@ -45,7 +45,7 @@ public AuthResponseDto socialLogin(AuthRequestDto authRequestDto) throws NoSuchA
 
             String refreshToken = jwtTokenProvider.generateRefreshToken();
 
-            Boolean isExistUser = isMemberBySocialId(socialData.getId());
+            Boolean isExistUser = memberRepository.existsBySocialId(socialData.getId());
 
             // 신규 유저 저장
             if (!isExistUser.booleanValue()) {
@@ -61,10 +61,10 @@ public AuthResponseDto socialLogin(AuthRequestDto authRequestDto) throws NoSuchA
 
                 member.updateRefreshToken(refreshToken);
             }
-            else findMemberBySocialId(socialData.getId()).updateRefreshToken(refreshToken);
+            else memberRepository.findMemberBySocialIdOrThrow(socialData.getId()).updateRefreshToken(refreshToken);
 
             // socialId를 통해서 등록된 유저 찾기
-            Member signedMember = findMemberBySocialId(socialData.getId());
+            Member signedMember = memberRepository.findMemberBySocialIdOrThrow(socialData.getId());
 
             Authentication authentication = new UserAuthentication(signedMember.getId(), null, null);
 
@@ -83,15 +83,6 @@ public AuthTokenResponseDto getNewToken(String accessToken, String refreshToken)
         return AuthTokenResponseDto.of(accessToken,refreshToken);
     }
 
-    private Member findMemberBySocialId(String socialId) {
-        return memberRepository.findBySocialId(socialId)
-                .orElseThrow(() -> new BadRequestException(ErrorStatus.INVALID_MEMBER.getMessage()));
-    }
-
-    private boolean isMemberBySocialId(String socialId) {
-        return memberRepository.existsBySocialId(socialId);
-    }
-
     private SocialInfoDto getSocialData(SocialPlatform socialPlatform, String socialAccessToken) throws NoSuchAlgorithmException, InvalidKeySpecException {
 
         switch (socialPlatform) {
diff --git a/growthookServer/src/main/java/com/example/growthookserver/api/member/repository/MemberRepository.java b/growthookServer/src/main/java/com/example/growthookserver/api/member/repository/MemberRepository.java
index 43617d1..8c63c37 100644
--- a/growthookServer/src/main/java/com/example/growthookserver/api/member/repository/MemberRepository.java
+++ b/growthookServer/src/main/java/com/example/growthookserver/api/member/repository/MemberRepository.java
@@ -1,6 +1,7 @@
 package com.example.growthookserver.api.member.repository;
 
 import com.example.growthookserver.api.member.domain.Member;
+import com.example.growthookserver.common.exception.BadRequestException;
 import com.example.growthookserver.common.exception.NotFoundException;
 import com.example.growthookserver.common.response.ErrorStatus;
 import org.springframework.data.jpa.repository.JpaRepository;
@@ -19,4 +20,9 @@ default Member findMemberByIdOrThrow(Long memberId){
         return findMemberById(memberId)
             .orElseThrow(() -> new NotFoundException(ErrorStatus.NOT_FOUND_MEMBER.getMessage()));
     }
+
+    default Member findMemberBySocialIdOrThrow(String socialId) {
+        return findBySocialId(socialId)
+            .orElseThrow(() -> new BadRequestException(ErrorStatus.INVALID_MEMBER.getMessage()));
+    }
 }