diff --git a/src/main/java/umc/cockple/demo/domain/member/controller/MemberController.java b/src/main/java/umc/cockple/demo/domain/member/controller/MemberController.java
index 9f2d6bb3..7e4bd68b 100644
--- a/src/main/java/umc/cockple/demo/domain/member/controller/MemberController.java
+++ b/src/main/java/umc/cockple/demo/domain/member/controller/MemberController.java
@@ -7,10 +7,10 @@
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.ResponseCookie;
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 import umc.cockple.demo.domain.member.dto.*;
-import umc.cockple.demo.domain.member.dto.kakao.KakaoLoginDTO;
 import umc.cockple.demo.domain.member.exception.MemberErrorCode;
 import umc.cockple.demo.domain.member.exception.MemberException;
 import umc.cockple.demo.domain.member.service.MemberCommandService;
@@ -19,6 +19,7 @@
 import umc.cockple.demo.global.oauth2.service.KakaoOauthService;
 import umc.cockple.demo.global.response.BaseResponse;
 import umc.cockple.demo.global.response.code.status.CommonSuccessCode;
+import umc.cockple.demo.global.security.domain.CustomUserDetails;
 import umc.cockple.demo.global.security.utils.SecurityUtil;
 
 import java.io.IOException;
@@ -128,9 +129,9 @@ public ResponseEntity<TokenRefreshResponse> refresh(@CookieValue("refreshToken")
     @PatchMapping(value = "/member")
     @Operation(summary = "회원 탈퇴 API",
             description = "사용자 회원 탈퇴")
-    public BaseResponse<String> withdraw() {
+    public BaseResponse<String> withdraw(@AuthenticationPrincipal CustomUserDetails member) {
 
-        Long memberId = SecurityUtil.getCurrentMemberId();
+        Long memberId = member.getMemberId();
 
         memberCommandService.withdrawMember(memberId);
         return BaseResponse.success(CommonSuccessCode.NO_CONTENT);
diff --git a/src/main/java/umc/cockple/demo/domain/member/exception/MemberErrorCode.java b/src/main/java/umc/cockple/demo/domain/member/exception/MemberErrorCode.java
index 6986a37f..e0333069 100644
--- a/src/main/java/umc/cockple/demo/domain/member/exception/MemberErrorCode.java
+++ b/src/main/java/umc/cockple/demo/domain/member/exception/MemberErrorCode.java
@@ -43,6 +43,8 @@ public enum MemberErrorCode implements BaseErrorCode {
 
     NICKNAME_IS_NULL(HttpStatus.BAD_REQUEST, "MEM_AUTH_401", "토큰 생성 중 닉네임이 존재하지 않습니다."),
 
+    OAUTH_UNLINK_FAIL(HttpStatus.INTERNAL_SERVER_ERROR, "MEM_AUTH_501", "카카오 연결 끊기에 실패했습니다.")
+
 
     ;
 
diff --git a/src/main/java/umc/cockple/demo/domain/member/service/MemberCommandService.java b/src/main/java/umc/cockple/demo/domain/member/service/MemberCommandService.java
index 2cfbcde5..5a62d8c2 100644
--- a/src/main/java/umc/cockple/demo/domain/member/service/MemberCommandService.java
+++ b/src/main/java/umc/cockple/demo/domain/member/service/MemberCommandService.java
@@ -10,7 +10,6 @@
 import umc.cockple.demo.domain.member.domain.*;
 import umc.cockple.demo.domain.member.dto.MemberDetailInfoRequestDTO;
 import umc.cockple.demo.domain.member.dto.UpdateProfileRequestDTO;
-import umc.cockple.demo.domain.member.dto.kakao.KakaoLoginDTO;
 import umc.cockple.demo.domain.member.enums.MemberPartyStatus;
 import umc.cockple.demo.domain.member.exception.MemberErrorCode;
 import umc.cockple.demo.domain.member.exception.MemberException;
@@ -19,9 +18,9 @@
 import umc.cockple.demo.domain.image.service.ImageService;
 
 import java.util.List;
+import umc.cockple.demo.global.oauth2.service.KakaoOauthService;
 
 import static umc.cockple.demo.domain.member.dto.CreateMemberAddrDTO.*;
-import static umc.cockple.demo.domain.member.dto.kakao.KakaoLoginDTO.*;
 
 @Service
 @Transactional
@@ -36,6 +35,7 @@ public class MemberCommandService {
     private final MemberPartyRepository memberPartyRepository;
     private final ChatRoomMemberRepository chatRoomMemberRepository;
 
+    private final KakaoOauthService kakaoOauthService;
     private final ImageService imageService;
 
 
@@ -87,6 +87,9 @@ public void withdrawMember(Long memberId) {
         memberExerciseRepository.deleteAllByMember(member);
         memberPartyRepository.deleteAllByMember(member);
 
+        // 카카오 연결 끊기
+        kakaoOauthService.unlinkAccess(member);
+
         // 활성화 여부 해제, 리프레시 토큰 삭제
         member.withdraw();
     }
diff --git a/src/main/java/umc/cockple/demo/global/oauth2/domain/KakaoClient.java b/src/main/java/umc/cockple/demo/global/oauth2/domain/KakaoClient.java
index 3b9f9674..1d31ee38 100644
--- a/src/main/java/umc/cockple/demo/global/oauth2/domain/KakaoClient.java
+++ b/src/main/java/umc/cockple/demo/global/oauth2/domain/KakaoClient.java
@@ -34,6 +34,12 @@ public class KakaoClient {
     @Value("${kakao.user-info-uri}")
     private String userInfoUri;
 
+    @Value("${kakao.unlink-uri}")
+    private String unlinkUri;
+
+    @Value("$kakao.admin-key")
+    private String adminKey;
+
 
     // 인가코드로 AccessToken 요청하기
     public String getAccessToken(String code) {
@@ -74,5 +80,19 @@ public KakaoClientInfo getClientInfo(String accessToken) {
         return new KakaoClientInfo(kakaoId, nickname);
     }
 
+    // 회원 탈퇴를 위해 카카오와 연결 끊기
+    public void unlinkByAdmin(Long socialId) {
+        webClient.post()
+                .uri(unlinkUri)
+                .header(HttpHeaders.AUTHORIZATION, "KakaoAK " + adminKey)
+                .contentType(MediaType.APPLICATION_FORM_URLENCODED)
+                .body(BodyInserters.fromFormData("target_id_type", "user_id")
+                        .with("target_id", String.valueOf(socialId)))
+                .retrieve()
+                .toBodilessEntity()
+                .block()
+        ;
 
+        log.info("[KAKAO] unlink OK. kakaoUserId={}", socialId);
+    }
 }
diff --git a/src/main/java/umc/cockple/demo/global/oauth2/domain/info/KakaoClientInfo.java b/src/main/java/umc/cockple/demo/global/oauth2/domain/info/KakaoClientInfo.java
index bed5d299..34205079 100644
--- a/src/main/java/umc/cockple/demo/global/oauth2/domain/info/KakaoClientInfo.java
+++ b/src/main/java/umc/cockple/demo/global/oauth2/domain/info/KakaoClientInfo.java
@@ -1,7 +1,7 @@
 package umc.cockple.demo.global.oauth2.domain.info;
 
 public record KakaoClientInfo(
-        Long kakaoId,
+        Long kakaoId, // 소셜아이디
         String nickname
 ) {
 
diff --git a/src/main/java/umc/cockple/demo/global/oauth2/service/KakaoOauthService.java b/src/main/java/umc/cockple/demo/global/oauth2/service/KakaoOauthService.java
index 99492a9b..a62898c6 100644
--- a/src/main/java/umc/cockple/demo/global/oauth2/service/KakaoOauthService.java
+++ b/src/main/java/umc/cockple/demo/global/oauth2/service/KakaoOauthService.java
@@ -65,6 +65,17 @@ public KakaoLoginResponseDTO signup(String code) {
         return new KakaoLoginResponseDTO(accessToken, refreshToken, member.getId(), member.getNickname(), newMember);
     }
 
+    public void unlinkAccess(Member member) {
+        if (member.getSocialId() != null) {
+            try {
+                kakaoClient.unlinkByAdmin(member.getSocialId());
+            } catch (Exception e) {
+                throw new MemberException(MemberErrorCode.OAUTH_UNLINK_FAIL);
+            }
+        }
+
+    }
+
     public KakaoLoginResponseDTO createDevToken() {
         // 특정 member 가져오기
         Member member = memberRepository.findById(1L)
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 8c27e800..f08f6d9a 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -73,6 +73,8 @@ kakao:
   token-uri: https://kauth.kakao.com/oauth/token
   user-info-uri: https://kapi.kakao.com/v2/user/me
   redirect-uri: ${KAKAO_REDIRECT_URI}
+  admin-key: ${KAKAO_ADMIN_KEY}
+  unlink-uri: https://kapi.kakao.com/v1/user/unlink
 
 jwt:
   secret: ${JWT_SECRET_KEY}