diff --git a/src/main/java/com/taba/nimonaemo/member/model/entity/Member.java b/src/main/java/com/taba/nimonaemo/member/model/entity/Member.java
index 24f8748..ac300f2 100644
--- a/src/main/java/com/taba/nimonaemo/member/model/entity/Member.java
+++ b/src/main/java/com/taba/nimonaemo/member/model/entity/Member.java
@@ -21,6 +21,8 @@
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class Member extends BaseEntity {
 
+    public static String DELETED_MEMBER = "탈퇴한 회원";
+
     @Id
     @GeneratedValue
     @Column(name = "member_id")
@@ -65,4 +67,56 @@ private Member(@NotNull String name,
         this.memberRole = memberRole;
         this.status = status;
     }
+
+
+    public String getName() {
+        if (!getStatus().isActive()) {
+            return DELETED_MEMBER;
+        }
+        return this.name;
+    }
+
+    public String getNickName() {
+        if (!getStatus().isActive()) {
+            return DELETED_MEMBER;
+        }
+        return this.nickname;
+    }
+
+    /**
+     * Member 상태를 변경합니다.
+     *
+     * @param status 상태
+     */
+    public void changeStatus(MemberStatus status) {
+        this.status = status;
+    }
+
+    /**
+     * 이름을 변경합니다.
+     *
+     * @param name 이름
+     */
+    public void changeName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * 닉네임(아이디)를 변경합니다.
+     *
+     * @param nickname 닉네임(아이디)
+     */
+    public void changeNickname(String nickname) {
+        this.nickname = nickname;
+    }
+
+    /**
+     * 탈퇴한 Member의 정보를 수정합니다.
+     */
+    public void emptyOutUserInfo() {
+        this.name = "";
+        this.phone = "";
+        this.nickname = "";
+        this.password = "";
+    }
 }
diff --git a/src/main/java/com/taba/nimonaemo/member/service/SignupService.java b/src/main/java/com/taba/nimonaemo/member/service/SignupService.java
index 8dccfa4..e2d6ba8 100644
--- a/src/main/java/com/taba/nimonaemo/member/service/SignupService.java
+++ b/src/main/java/com/taba/nimonaemo/member/service/SignupService.java
@@ -9,6 +9,7 @@
 import com.taba.nimonaemo.member.model.dto.response.ResponseSignupTokenDto;
 import com.taba.nimonaemo.member.model.entity.Member;
 import com.taba.nimonaemo.member.repository.MemberRepository;
+import com.taba.nimonaemo.record.exception.HairStatusNotFoundException;
 import com.taba.nimonaemo.record.model.entity.HairStatus;
 import com.taba.nimonaemo.record.repository.HairStatusRepository;
 import lombok.RequiredArgsConstructor;
@@ -39,23 +40,34 @@ public void signup(RequestSignupDto dto, String signupToken) {
         String phone = smsVerificationService.getPhoneNumber(signupToken);
         String encryptedPassword = passwordEncoder.encode(dto.getPassword());
 
-//        Optional<User> inactiveUser = userRepository.findByInactiveByNickname(dto.getNickname());
-        //TODO 회원탈퇴 로직이 필요할 시 구현
-
-        Member member = Member.builder()
-                .name(dto.getName())
-                .nickname(dto.getNickname())
-                .password(encryptedPassword)
-                .phone(phone)
-                .memberRole(MemberRole.MEMBER)
-                .status(MemberStatus.ACTIVE)
-                .build();
-        memberRepository.save(member);
-
-        HairStatus hairStatus = HairStatus.builder()
-                .member(member)
-                .build();
-        hairStatusRepository.save(hairStatus);
+        Optional<Member> inactiveUser = memberRepository.findByInactiveByPhone(dto.getPhone());
+
+        if (inactiveUser.isPresent()) {
+            Member member = inactiveUser.get();
+            member.changeStatus(MemberStatus.ACTIVE);
+            member.changeName(dto.getName());
+            member.changeNickname(dto.getNickname());
+
+            HairStatus hairStatus = hairStatusRepository.findByMemberId(member.getId()).orElseThrow(HairStatusNotFoundException::new);
+            hairStatus.changeStartPermDate(null);
+            hairStatus.changeStartDyeDate(null);
+        }
+        else {
+            Member member = Member.builder()
+                    .name(dto.getName())
+                    .nickname(dto.getNickname())
+                    .password(encryptedPassword)
+                    .phone(phone)
+                    .memberRole(MemberRole.MEMBER)
+                    .status(MemberStatus.ACTIVE)
+                    .build();
+            memberRepository.save(member);
+
+            HairStatus hairStatus = HairStatus.builder()
+                    .member(member)
+                    .build();
+            hairStatusRepository.save(hairStatus);
+        }
 
         deleteSignupAuths(signupToken);
     }