diff --git a/src/main/java/Journey/Together/domain/member/service/AuthService.java b/src/main/java/Journey/Together/domain/member/service/AuthService.java
index 87d235d..edc28b6 100644
--- a/src/main/java/Journey/Together/domain/member/service/AuthService.java
+++ b/src/main/java/Journey/Together/domain/member/service/AuthService.java
@@ -16,6 +16,7 @@
 import Journey.Together.global.security.kakao.dto.KakaoProfile;
 import Journey.Together.global.security.jwt.TokenProvider;
 import Journey.Together.global.security.jwt.dto.TokenDto;
+import Journey.Together.global.security.kakao.dto.KakaoToken;
 import Journey.Together.global.security.naver.dto.NaverDeleteResponse;
 import Journey.Together.global.security.naver.dto.NaverProperties;
 import Journey.Together.global.security.naver.dto.NaverTokenResponse;
@@ -89,7 +90,7 @@ public LoginRes signIn(String token, String type, LoginReq loginReq) throws IOEx
                 interestRepository.save(interest);
             }
             tokenDto = tokenProvider.createToken(member);
-            member.setRefreshToken(tokenDto.refreshToken());
+            member.setRefreshToken(loginReq.refreshToken());
 
             // Response
             return LoginRes.of(member, tokenDto);
@@ -156,6 +157,16 @@ public void withdrawal(Member member) {
             if(naverDeleteResponse.getError() != null){
                 throw new ApplicationException(ErrorCode.NAVER_DELETE_ERROR);
             }
+        }else if(member.getLoginType().equals(LoginType.KAKAO)) {
+            //accessToken 요청
+            KakaoToken kakaoToken = kakaoClient.getKakaoAccessToken(member.getRefreshToken());
+            //연결 삭제
+            Long id = kakaoClient.unlinkUser(kakaoToken.access_token());
+            if(id==null){
+                throw new ApplicationException(ErrorCode.KAKAO_REFRESH_TOKEN_ERROR);
+            }else if(!id.equals(member.getMemberId())){
+                throw new ApplicationException(ErrorCode.KAKAO_DELETE_ERROR);
+            }
         }
 
         memberRepository.delete(member);
diff --git a/src/main/java/Journey/Together/global/exception/ErrorCode.java b/src/main/java/Journey/Together/global/exception/ErrorCode.java
index e211fab..5f043ed 100644
--- a/src/main/java/Journey/Together/global/exception/ErrorCode.java
+++ b/src/main/java/Journey/Together/global/exception/ErrorCode.java
@@ -29,7 +29,8 @@ public enum ErrorCode {
     LOGOUT_TOKEN_EXCEPTION(HttpStatus.UNAUTHORIZED, 3003, "로그아웃된 토큰입니다"),
     WRONG_TOKEN(HttpStatus.UNAUTHORIZED, 3004, "유효하지 않은 토큰입니다."),
     WRONG_ACCESS_EXCEPTION(HttpStatus.BAD_REQUEST, 3005, "관리자만 접근 가능합니다."),
-
+    KAKAO_REFRESH_TOKEN_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, 3006, "카카오 토큰에 오류가 있습니다"),
+    KAKAO_DELETE_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, 3007, "카카오 연결 끊기에 실패하였습니다"),
 
     //4000: Apply Error
     NOT_APPLY_EXCEPTION(HttpStatus.BAD_REQUEST,4000,"지원 기간 지났습니다"),
diff --git a/src/main/java/Journey/Together/global/security/kakao/KakaoClient.java b/src/main/java/Journey/Together/global/security/kakao/KakaoClient.java
index 5ce05eb..9a6abd5 100644
--- a/src/main/java/Journey/Together/global/security/kakao/KakaoClient.java
+++ b/src/main/java/Journey/Together/global/security/kakao/KakaoClient.java
@@ -1,6 +1,8 @@
 package Journey.Together.global.security.kakao;
 
 import Journey.Together.global.security.kakao.dto.KakaoProfile;
+import Journey.Together.global.security.kakao.dto.KakaoToken;
+import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -21,9 +23,6 @@ public class KakaoClient {
     @Value("${spring.security.oauth2.client.registration.kakao.client-secret}")
     private String kakaoClientSecret;
 
-    @Value("${spring.security.oauth2.client.registration.kakao.authorization-grant-type}")
-    private String kakwaoGrantType;
-
     @Value("${spring.security.oauth2.client.registration.kakao.redirect-uri}")
     private String kakaoRedirectUri;
 
@@ -33,6 +32,50 @@ public class KakaoClient {
     @Value("${spring.security.oauth2.client.provider.kakao.user-info-uri}")
     private String kakaoUserInfoUri;
 
+    @Value("${spring.security.oauth2.client.admin-key}")
+    private String adminKey;
+
+    @Value("${spring.security.oauth2.client.withdrawal.unlink-url}")
+    private String unlinkUri;
+
+
+    /**
+     * 카카오 서버에 인가코드 기반으로 사용자의 토큰 정보를 조회하는 메소드
+     * @param refresh_token - 카카오에서 발급해준 refreshToken 코드
+     * @return - 카카오에서 반환한 응답 토큰 객체
+     */
+    public KakaoToken getKakaoAccessToken(String refresh_token) {
+        // 요청 보낼 객체 기본 생성
+        WebClient webClient = WebClient.create(kakaoTokenUri);
+
+        //요청 본문
+        MultiValueMap<String , String> params = new LinkedMultiValueMap<>();
+        params.add("grant_type", "refresh_token");
+        params.add("client_id", kakaoClientId);
+        params.add("refresh_token", refresh_token);
+        params.add("client_secret", kakaoClientSecret);
+
+        // 요청 보내기 및 응답 수신
+        String response = webClient.post()
+                .uri(kakaoTokenUri)
+                .header("Content-type", "application/x-www-form-urlencoded")
+                .body(BodyInserters.fromFormData(params))
+                .retrieve() // 데이터 받는 방식, 스프링에서는 exchange는 메모리 누수 가능성 때문에 retrieve 권장
+                .bodyToMono(String.class) // (Mono는 단일 데이터, Flux는 복수 데이터)
+                .block();// 비동기 방식의 데이터 수신
+
+        // 수신된 응답 Mapping
+        ObjectMapper objectMapper = new ObjectMapper();
+        KakaoToken kakaoToken;
+        try {
+            kakaoToken = objectMapper.readValue(response, KakaoToken.class);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+
+        return kakaoToken;
+    }
+
     public KakaoProfile getMemberInfo(String accesToken) {
         // 요청 기본 객체 생성
         WebClient webClient = WebClient.create(kakaoUserInfoUri);
@@ -56,4 +99,29 @@ public KakaoProfile getMemberInfo(String accesToken) {
 
         return kakaoProfile;
     }
+
+    //카카오와 연결 끊기
+    public Long unlinkUser(String accessToken){
+        // 요청 기본 객체 생성
+        WebClient webClient = WebClient.create(unlinkUri);
+        // 요청 보내서 응답 받기
+        String response = webClient.post()
+                .uri(unlinkUri)
+                .header("Content-Type", "application/x-www-form-urlencoded;charset=utf-8")
+                .header("Authorization", "Bearer " + accessToken)
+                .retrieve()
+                .bodyToMono(String.class)
+                .block();
+        // 수신된 응답 Mapping
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            JsonNode jsonNode = objectMapper.readTree(response);
+            if (jsonNode.has("id")) {
+                return jsonNode.get("id").asLong();
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+        return null;
+    }
 }
diff --git a/src/main/java/Journey/Together/global/security/kakao/dto/KakaoToken.java b/src/main/java/Journey/Together/global/security/kakao/dto/KakaoToken.java
new file mode 100644
index 0000000..eaa1eb2
--- /dev/null
+++ b/src/main/java/Journey/Together/global/security/kakao/dto/KakaoToken.java
@@ -0,0 +1,14 @@
+package Journey.Together.global.security.kakao.dto;
+
+import lombok.Builder;
+
+@Builder
+public record KakaoToken(
+        String access_token,
+        String refresh_token,
+        String token_type,
+        Integer expires_in,
+        Integer refresh_token_expires_in,
+        String scope
+) {
+}