diff --git a/backend/src/main/java/com/mapbefine/mapbefine/member/application/MemberCommandService.java b/backend/src/main/java/com/mapbefine/mapbefine/member/application/MemberCommandService.java
index 2a3f4aa7b..f77ebc500 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/member/application/MemberCommandService.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/member/application/MemberCommandService.java
@@ -32,6 +32,9 @@ public MemberCommandService(
     }
 
     public Long save(MemberCreateRequest request) {
+        validateUniqueName(request.name());
+        validateUniqueEmail(request.email());
+
         Member member = Member.of(
                 request.name(),
                 request.email(),
@@ -43,6 +46,18 @@ public Long save(MemberCreateRequest request) {
                 .getId();
     }
 
+    private void validateUniqueName(String name) {
+        if (memberRepository.existsByMemberInfoName(name)) {
+            throw new IllegalArgumentException("이미 존재하는 이름입니다.");
+        }
+    }
+
+    private void validateUniqueEmail(String email) {
+        if (memberRepository.existsByMemberInfoEmail(email)) {
+            throw new IllegalArgumentException("이미 존재하는 이메일입니다.");
+        }
+    }
+
     public Long saveMemberTopicPermission(
             AuthMember authMember,
             MemberTopicPermissionCreateRequest request
diff --git a/backend/src/main/java/com/mapbefine/mapbefine/member/domain/MemberRepository.java b/backend/src/main/java/com/mapbefine/mapbefine/member/domain/MemberRepository.java
index ce532c1e5..4935e1628 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/member/domain/MemberRepository.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/member/domain/MemberRepository.java
@@ -7,6 +7,8 @@ public interface MemberRepository extends JpaRepository<Member, Long> {
 
     Optional<Member> findByMemberInfoEmail(String email);
 
+    boolean existsByMemberInfoName(String name);
+
     boolean existsByMemberInfoEmail(String email);
 
 }
diff --git a/backend/src/test/java/com/mapbefine/mapbefine/member/application/MemberCommandServiceTest.java b/backend/src/test/java/com/mapbefine/mapbefine/member/application/MemberCommandServiceTest.java
index d72fd0aad..c811892c3 100644
--- a/backend/src/test/java/com/mapbefine/mapbefine/member/application/MemberCommandServiceTest.java
+++ b/backend/src/test/java/com/mapbefine/mapbefine/member/application/MemberCommandServiceTest.java
@@ -9,12 +9,14 @@
 import com.mapbefine.mapbefine.member.domain.Member;
 import com.mapbefine.mapbefine.member.domain.MemberRepository;
 import com.mapbefine.mapbefine.member.domain.Role;
+import com.mapbefine.mapbefine.member.dto.request.MemberCreateRequest;
 import com.mapbefine.mapbefine.member.dto.request.MemberTopicPermissionCreateRequest;
 import com.mapbefine.mapbefine.member.dto.response.MemberDetailResponse;
 import com.mapbefine.mapbefine.topic.TopicFixture;
 import com.mapbefine.mapbefine.topic.domain.Topic;
 import com.mapbefine.mapbefine.topic.domain.TopicRepository;
 import java.util.NoSuchElementException;
+import java.util.Optional;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -214,4 +216,75 @@ void deleteMemberTopicPermissionByCreator_whenNoneExistsPermission_thenFail() {
                 .isInstanceOf(NoSuchElementException.class);
     }
 
+    @Test
+    @DisplayName("유저를 저장한다.")
+    void save() {
+        // given
+        Member member = MemberFixture.create(
+                "member",
+                "member@naver.com",
+                Role.USER
+        );
+        MemberCreateRequest memberCreateRequest = new MemberCreateRequest(
+                member.getMemberInfo().getName(),
+                member.getMemberInfo().getEmail(),
+                member.getMemberInfo().getImageUrl(),
+                member.getMemberInfo().getRole()
+        );
+
+        // when
+        Long savedId = memberCommandService.save(memberCreateRequest);
+        Member savedResult = memberRepository.findById(savedId)
+                .orElseThrow(NoSuchElementException::new);
+
+        // then
+        assertThat(savedResult).usingRecursiveComparison()
+                .ignoringFields("id")
+                .isEqualTo(member);
+    }
+
+    @Test
+    @DisplayName("이미 존재하는 이름으로 유저를 저장할 때 예외가 발생한다.")
+    void save_whenDuplicateName_thenFail() {
+        // given
+        Member member = MemberFixture.create(
+                "member",
+                "member@naver.com",
+                Role.USER
+        );
+        memberRepository.save(member);
+        MemberCreateRequest memberCreateRequest = new MemberCreateRequest(
+                member.getMemberInfo().getName(),
+                "memberr@naver.com",
+                member.getMemberInfo().getImageUrl(),
+                member.getMemberInfo().getRole()
+        );
+
+        // when
+        assertThatThrownBy(() -> memberCommandService.save(memberCreateRequest))
+                .isInstanceOf(IllegalArgumentException.class);
+    }
+
+    @Test
+    @DisplayName("이미 존재하는 이메일로 유저를 저장할 때 예외가 발생한다.")
+    void save_whenDuplicateEmail_thenFail() {
+        // given
+        Member member = MemberFixture.create(
+                "member",
+                "member@naver.com",
+                Role.USER
+        );
+        memberRepository.save(member);
+        MemberCreateRequest memberCreateRequest = new MemberCreateRequest(
+                "memberr",
+                member.getMemberInfo().getEmail(),
+                member.getMemberInfo().getImageUrl(),
+                member.getMemberInfo().getRole()
+        );
+
+        // when
+        assertThatThrownBy(() -> memberCommandService.save(memberCreateRequest))
+                .isInstanceOf(IllegalArgumentException.class);
+    }
+
 }