diff --git a/backend/src/main/java/com/funeat/member/application/MemberService.java b/backend/src/main/java/com/funeat/member/application/MemberService.java
index b1d55931a..6ac06698b 100644
--- a/backend/src/main/java/com/funeat/member/application/MemberService.java
+++ b/backend/src/main/java/com/funeat/member/application/MemberService.java
@@ -3,6 +3,7 @@
 import com.funeat.auth.dto.SignUserDto;
 import com.funeat.auth.dto.UserInfoDto;
 import com.funeat.member.domain.Member;
+import com.funeat.member.dto.MemberRequest;
 import com.funeat.member.persistence.MemberRepository;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -32,4 +33,13 @@ public SignUserDto save(final UserInfoDto userInfoDto) {
 
         return SignUserDto.of(true, member);
     }
+
+    @Transactional
+    public void modify(final Long memberId, final MemberRequest request) {
+        final Member findMember = memberRepository.findById(memberId)
+                .orElseThrow(IllegalArgumentException::new);
+
+        findMember.modifyNickname(request.getNickname());
+        findMember.modifyProfileImage(request.getProfileImage());
+    }
 }
diff --git a/backend/src/main/java/com/funeat/member/dto/MemberRequest.java b/backend/src/main/java/com/funeat/member/dto/MemberRequest.java
new file mode 100644
index 000000000..a4800c6ed
--- /dev/null
+++ b/backend/src/main/java/com/funeat/member/dto/MemberRequest.java
@@ -0,0 +1,20 @@
+package com.funeat.member.dto;
+
+public class MemberRequest {
+
+    private final String nickname;
+    private final String profileImage;
+
+    public MemberRequest(final String nickname, final String profileImage) {
+        this.nickname = nickname;
+        this.profileImage = profileImage;
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public String getProfileImage() {
+        return profileImage;
+    }
+}
diff --git a/backend/src/test/java/com/funeat/member/application/MemberServiceTest.java b/backend/src/test/java/com/funeat/member/application/MemberServiceTest.java
index 65967f853..ddb281c7f 100644
--- a/backend/src/test/java/com/funeat/member/application/MemberServiceTest.java
+++ b/backend/src/test/java/com/funeat/member/application/MemberServiceTest.java
@@ -5,6 +5,7 @@
 import com.funeat.auth.dto.UserInfoDto;
 import com.funeat.common.DataClearExtension;
 import com.funeat.member.domain.Member;
+import com.funeat.member.dto.MemberRequest;
 import com.funeat.member.persistence.MemberRepository;
 import org.assertj.core.api.SoftAssertions;
 import org.junit.jupiter.api.Assertions;
@@ -71,4 +72,122 @@ class findOrCreateMember_테스트 {
             });
         }
     }
+
+    @Nested
+    class modify_테스트 {
+
+        @Test
+        void 닉네임과_프로필_사진이_그대로면_사용자_정보는_바뀌지_않는다() {
+            // given
+            final var nickname = "test";
+            final var profileImage = "http://www.test.com";
+            final MemberRequest request = new MemberRequest(nickname, profileImage);
+
+            final var member = new Member(nickname, profileImage, "1");
+            final var memberId = memberRepository.save(member).getId();
+
+            final var expected = memberRepository.findById(memberId).get();
+            final var expectedNickname = expected.getNickname();
+            final var expectedProfileImage = expected.getProfileImage();
+
+            // when
+            memberService.modify(memberId, request);
+            final var actual = memberRepository.findById(memberId).get();
+            final var actualNickname = actual.getNickname();
+            final var actualProfileImage = actual.getProfileImage();
+
+            // then
+            SoftAssertions.assertSoftly(softAssertions -> {
+                softAssertions.assertThat(actualNickname).isEqualTo(expectedNickname);
+                softAssertions.assertThat(actualProfileImage).isEqualTo(expectedProfileImage);
+            });
+        }
+
+        @Test
+        void 닉네임만_바뀌고_프로필_사진은_그대로면_닉네임만_바뀐다() {
+            // given
+            final var beforeNickname = "before";
+            final var profileImage = "http://www.test.com";
+            final var afterNickname = "after";
+            final MemberRequest request = new MemberRequest(afterNickname, profileImage);
+
+            final var member = new Member(beforeNickname, profileImage, "1");
+            final var memberId = memberRepository.save(member).getId();
+
+            final var expected = memberRepository.findById(memberId).get();
+            final var expectedNickname = expected.getNickname();
+            final var expectedProfileImage = expected.getProfileImage();
+
+            // when
+            memberService.modify(memberId, request);
+            final var actual = memberRepository.findById(memberId).get();
+            final var actualNickname = actual.getNickname();
+            final var actualProfileImage = actual.getProfileImage();
+
+            // then
+            SoftAssertions.assertSoftly(softAssertions -> {
+                softAssertions.assertThat(actualNickname).isNotEqualTo(expectedNickname);
+                softAssertions.assertThat(actualProfileImage).isEqualTo(expectedProfileImage);
+            });
+        }
+
+        @Test
+        void 닉네임은_그대로이고_프로필_사진이_바뀌면_프로필_사진만_바뀐다() {
+            // given
+            final var nickname = "test";
+            final var beforeProfileImage = "http://www.before.com";
+            final var afterProfileImage = "http://www.after.com";
+
+            final MemberRequest request = new MemberRequest(nickname, afterProfileImage);
+
+            final var member = new Member(nickname, beforeProfileImage, "1");
+            final var memberId = memberRepository.save(member).getId();
+
+            final var expected = memberRepository.findById(memberId).get();
+            final var expectedNickname = expected.getNickname();
+            final var expectedProfileImage = expected.getProfileImage();
+
+            // when
+            memberService.modify(memberId, request);
+            final var actual = memberRepository.findById(memberId).get();
+            final var actualNickname = actual.getNickname();
+            final var actualProfileImage = actual.getProfileImage();
+
+            // then
+            SoftAssertions.assertSoftly(softAssertions -> {
+                softAssertions.assertThat(actualNickname).isEqualTo(expectedNickname);
+                softAssertions.assertThat(actualProfileImage).isNotEqualTo(expectedProfileImage);
+            });
+        }
+
+        @Test
+        void 닉네임과_프로필_사진_모두_바뀌면_모두_바뀐다() {
+            // given
+            final var beforeNickname = "before";
+            final var afterNickname = "after";
+            final var beforeProfileImage = "http://www.before.com";
+            final var afterProfileImage = "http://www.after.com";
+
+            final MemberRequest request = new MemberRequest(afterNickname, afterProfileImage);
+
+            final var member = new Member(beforeNickname, beforeProfileImage, "1");
+            final var memberId = memberRepository.save(member).getId();
+
+            final var expected = memberRepository.findById(memberId).get();
+            final var expectedNickname = expected.getNickname();
+            final var expectedProfileImage = expected.getProfileImage();
+
+            // when
+            memberService.modify(memberId, request);
+            final var actual = memberRepository.findById(memberId).get();
+            final var actualNickname = actual.getNickname();
+            final var actualProfileImage = actual.getProfileImage();
+
+            // then
+            SoftAssertions.assertSoftly(softAssertions -> {
+                softAssertions.assertThat(actualNickname).isNotEqualTo(expectedNickname);
+                softAssertions.assertThat(actualProfileImage).isNotEqualTo(expectedProfileImage);
+            });
+        }
+    }
 }