diff --git a/src/main/java/com/ohdab/member/service/WithdrawlService.java b/src/main/java/com/ohdab/member/service/WithdrawlService.java
index eb8df379..53ecd4f9 100644
--- a/src/main/java/com/ohdab/member/service/WithdrawlService.java
+++ b/src/main/java/com/ohdab/member/service/WithdrawlService.java
@@ -1,5 +1,9 @@
 package com.ohdab.member.service;
 
+import static com.ohdab.member.service.helper.MemberHelperService.findExistingMemberById;
+
+import com.ohdab.member.domain.Member;
+import com.ohdab.member.repository.MemberRepository;
 import com.ohdab.member.service.usecase.WithdrawlUsecase;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -10,6 +14,11 @@
 @Transactional
 public class WithdrawlService implements WithdrawlUsecase {
 
+    private final MemberRepository memberRepository;
+
     @Override
-    public void withdrawl(long memberId) {}
+    public void withdrawl(long memberId) {
+        Member member = findExistingMemberById(memberRepository, memberId);
+        member.withdrawal();
+    }
 }
diff --git a/src/test/java/com/ohdab/member/repository/MemberRepositoryTest.java b/src/test/java/com/ohdab/member/repository/MemberRepositoryTest.java
index 6ddcecbc..f01c011f 100644
--- a/src/test/java/com/ohdab/member/repository/MemberRepositoryTest.java
+++ b/src/test/java/com/ohdab/member/repository/MemberRepositoryTest.java
@@ -7,7 +7,6 @@
 import com.ohdab.member.domain.Authority;
 import com.ohdab.member.domain.Member;
 import com.ohdab.member.domain.memberinfo.MemberInfo;
-import java.util.ArrayList;
 import java.util.List;
 import javax.persistence.EntityManager;
 import org.junit.jupiter.api.DisplayName;
@@ -19,7 +18,7 @@
 class MemberRepositoryTest {
 
     @Autowired private MemberRepository memberRepository;
-    @Autowired private EntityManager entityManager;
+    @Autowired private EntityManager em;
 
     @Test
     @DisplayName("선생님 목록 조회 성공 테스트")
@@ -31,8 +30,8 @@ class MemberRepositoryTest {
         Member teacher2 = memberRepository.save(createMember("선생님2", "tjstodsla2", teacher));
         Member teacher3 = memberRepository.save(createMember("선생님3", "tjstodsla3", teacher));
         Member student1 = memberRepository.save(createMember("학생", "gkrtod", student));
-        entityManager.flush();
-        entityManager.clear();
+        em.flush();
+        em.clear();
 
         // when
         List<Member> results = memberRepository.findByAuthoritiesContaining(teacher);
@@ -112,9 +111,24 @@ class MemberRepositoryTest {
                 .containsExactly(member.getId(), INACTIVE);
     }
 
-    private Member createMember(String name, String password, Authority role) {
-        List<Authority> authorities = new ArrayList<>();
-        authorities.add(role);
+    @DisplayName("회원탈퇴")
+    @Test
+    void 회원탈퇴() {
+        // given
+        Member member =
+                createMember("갑", "1234", new Authority("TEACHER"), new Authority("STUDENT"));
+
+        // when
+        memberRepository.save(member);
+        member.withdrawal();
+        em.flush();
+
+        // then
+        assertThat(member.getStatus()).isEqualTo(INACTIVE);
+    }
+
+    private Member createMember(String name, String password, Authority... role) {
+        List<Authority> authorities = List.of(role);
         return Member.builder()
                 .memberInfo(MemberInfo.builder().name(name).password(password).build())
                 .authorities(authorities)
diff --git a/src/test/java/com/ohdab/member/service/WithdrawlServiceTest.java b/src/test/java/com/ohdab/member/service/WithdrawlServiceTest.java
new file mode 100644
index 00000000..6d3f98b4
--- /dev/null
+++ b/src/test/java/com/ohdab/member/service/WithdrawlServiceTest.java
@@ -0,0 +1,127 @@
+package com.ohdab.member.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.when;
+
+import com.ohdab.member.domain.Authority;
+import com.ohdab.member.domain.Member;
+import com.ohdab.member.domain.MemberStatus;
+import com.ohdab.member.domain.memberinfo.MemberInfo;
+import com.ohdab.member.exception.AlreadyWithdrawlException;
+import com.ohdab.member.exception.NoMemberException;
+import com.ohdab.member.repository.MemberRepository;
+import com.ohdab.member.service.usecase.WithdrawlUsecase;
+import java.util.List;
+import java.util.Optional;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@ContextConfiguration(classes = {WithdrawlService.class})
+class WithdrawlServiceTest {
+
+    @Autowired private WithdrawlUsecase withdrawlUsecase;
+    @MockBean private MemberRepository memberRepository;
+
+    @DisplayName("withdrawl 메서드는")
+    @Nested
+    class withdrawlMethod {
+
+        @DisplayName("해당 회원이 존재하고")
+        @Nested
+        class isExitsMember {
+
+            @DisplayName("탈퇴하지 않았다면")
+            @Nested
+            class isActiveMember {
+
+                @DisplayName("탈퇴처리한다.")
+                @Test
+                void withdrawl() {
+                    // given
+                    final long memberId = 1L;
+                    final Member member =
+                            Member.builder()
+                                    .memberInfo(
+                                            MemberInfo.builder().name("갑").password("1234").build())
+                                    .authorities(
+                                            List.of(
+                                                    new Authority("STUDENT"),
+                                                    new Authority("TEACHER")))
+                                    .build();
+
+                    // when
+                    when(memberRepository.findById(anyLong()))
+                            .thenReturn(Optional.ofNullable(member));
+                    withdrawlUsecase.withdrawl(memberId);
+
+                    // then
+                    assertThat(member.getStatus()).isEqualTo(MemberStatus.INACTIVE);
+                }
+            }
+
+            @DisplayName("이미 탈퇴했다면")
+            @Nested
+            class alreadyWithdrawl {
+
+                @DisplayName("AlreadyWithdrawlException 예외를 던진다.")
+                @Test
+                void throwAlreadyWithdrawlException() {
+                    // given
+                    final long memberId = 1L;
+                    final Member member =
+                            Member.builder()
+                                    .memberInfo(
+                                            MemberInfo.builder().name("갑").password("1234").build())
+                                    .authorities(
+                                            List.of(
+                                                    new Authority("STUDENT"),
+                                                    new Authority("TEACHER")))
+                                    .build();
+                    member.withdrawal();
+
+                    // when
+                    when(memberRepository.findById(anyLong()))
+                            .thenReturn(Optional.ofNullable(member));
+
+                    // then
+                    assertThatThrownBy(() -> withdrawlUsecase.withdrawl(memberId))
+                            .isInstanceOf(AlreadyWithdrawlException.class);
+                }
+            }
+        }
+
+        @DisplayName("해당 회원이 존재하지 않는다면")
+        @Nested
+        class isNotExistMember {
+
+            @DisplayName("NoMemberException 예외를 던진다.")
+            @Test
+            void throwNoMemberException() {
+                // given
+                final long memberId = 1L;
+                final Member member =
+                        Member.builder()
+                                .memberInfo(MemberInfo.builder().name("갑").password("1234").build())
+                                .authorities(
+                                        List.of(new Authority("STUDENT"), new Authority("TEACHER")))
+                                .build();
+
+                // when
+                when(memberRepository.findById(anyLong())).thenReturn(Optional.empty());
+
+                // then
+                assertThatThrownBy(() -> withdrawlUsecase.withdrawl(memberId))
+                        .isInstanceOf(NoMemberException.class);
+            }
+        }
+    }
+}