diff --git a/backend/src/test/java/codezap/category/service/facade/MemberCategoryApplicationServiceTest.java b/backend/src/test/java/codezap/category/service/facade/MemberCategoryApplicationServiceTest.java
new file mode 100644
index 000000000..c42333df7
--- /dev/null
+++ b/backend/src/test/java/codezap/category/service/facade/MemberCategoryApplicationServiceTest.java
@@ -0,0 +1,187 @@
+package codezap.category.service.facade;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import codezap.category.domain.Category;
+import codezap.category.dto.request.CreateCategoryRequest;
+import codezap.category.dto.request.UpdateCategoryRequest;
+import codezap.category.dto.response.CreateCategoryResponse;
+import codezap.category.dto.response.FindAllCategoriesResponse;
+import codezap.category.dto.response.FindCategoryResponse;
+import codezap.category.repository.CategoryRepository;
+import codezap.global.DatabaseIsolation;
+import codezap.global.exception.CodeZapException;
+import codezap.member.domain.Member;
+import codezap.member.dto.MemberDto;
+import codezap.member.fixture.MemberFixture;
+import codezap.member.repository.MemberRepository;
+
+@SpringBootTest
+@DatabaseIsolation
+class MemberCategoryApplicationServiceTest {
+
+    @Autowired
+    private MemberRepository memberRepository;
+
+    @Autowired
+    private CategoryRepository categoryRepository;
+
+    @Autowired
+    private MemberCategoryApplicationService sut;
+
+    @Nested
+    @DisplayName("카테고리 생성")
+    class Create {
+        @Test
+        @DisplayName("카테고리 생성 성공")
+        void createSuccess() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            String categoryName = "카테고리 1";
+            CreateCategoryRequest createCategoryRequest = new CreateCategoryRequest(categoryName);
+
+            CreateCategoryResponse response = sut.create(MemberDto.from(member), createCategoryRequest);
+
+            Category category = categoryRepository.fetchById(response.id());
+            assertAll(
+                    () -> assertThat(response).isEqualTo(CreateCategoryResponse.from(category)),
+                    () -> assertThat(response.name()).isEqualTo(categoryName)
+            );
+        }
+
+        @Test
+        @DisplayName("카테고리 생성 실패 : 멤버 존재하지 않음")
+        void createFailNotExistsMember() {
+            MemberDto nonExistentMemberDto = MemberDto.from(MemberFixture.memberFixture());
+            String categoryName = "카테고리 1";
+            CreateCategoryRequest createCategoryRequest = new CreateCategoryRequest(categoryName);
+
+            assertThatThrownBy(() -> sut.create(nonExistentMemberDto, createCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("식별자 " + nonExistentMemberDto.id() + "에 해당하는 멤버가 존재하지 않습니다.");
+        }
+
+        @Test
+        @DisplayName("카테고리 생성 실패 : 카테고리 이름 중복")
+        void createFailDuplicatedCategory() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            String categoryName = "카테고리 1";
+            categoryRepository.save(new Category(categoryName, member));
+            CreateCategoryRequest createCategoryRequest = new CreateCategoryRequest(categoryName);
+
+            assertThatThrownBy(() -> sut.create(MemberDto.from(member), createCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("이름이 " + categoryName + "인 카테고리가 이미 존재합니다.");
+        }
+    }
+
+    @Nested
+    @DisplayName("멤버에 따른 카테고리 조회")
+    class FindAllByMember {
+        @Test
+        @DisplayName("멤버에 따른 카테고리 조회 성공")
+        void findAllByMemberSuccess() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            Member otherMember = memberRepository.save(MemberFixture.createFixture("gugu"));
+            Category category1 = categoryRepository.save(new Category("카테고리 1", member));
+            Category category2 = categoryRepository.save(new Category("카테고리 2", member));
+            Category category3 = categoryRepository.save(new Category("카테고리 3", otherMember));
+
+            FindAllCategoriesResponse response = sut.findAllByMember(member.getId());
+
+            assertThat(response.categories()).hasSize(2)
+                    .containsExactly(FindCategoryResponse.from(category1), FindCategoryResponse.from(category2))
+                    .doesNotContain(FindCategoryResponse.from(category3));
+        }
+
+        @Test
+        @DisplayName("멤버에 따른 카테고리 조회 실패 : 멤버 존재하지 않음")
+        void findAllByMemberFailNotExistsMember() {
+            Long notExistsId = 100L;
+
+            assertThatThrownBy(() -> sut.findAllByMember(notExistsId))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("식별자 " + notExistsId + "에 해당하는 멤버가 존재하지 않습니다.");
+        }
+    }
+
+    @Nested
+    @DisplayName("카테고리 수정")
+    class Update {
+        @Test
+        @DisplayName("카테고리 수정 성공")
+        void updateSuccess() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            Category category = categoryRepository.save(new Category("카테고리 1", member));
+            UpdateCategoryRequest updateCategoryRequest = new UpdateCategoryRequest("카테고리 수정");
+
+            sut.update(MemberDto.from(member), category.getId(), updateCategoryRequest);
+
+            Category actual = categoryRepository.fetchById(category.getId());
+            assertAll(
+                    () -> assertThat(actual).isEqualTo(category),
+                    () -> assertThat(actual.getName()).isEqualTo(updateCategoryRequest.name())
+            );
+        }
+
+        @Test
+        @DisplayName("카테고리 수정 실패 : 멤버 존재하지 않음")
+        void updateFailNotExistsMember() {
+            MemberDto nonExistentMemberDto = MemberDto.from(MemberFixture.memberFixture());
+            String updatedCategoryName = "카테고리 수정";
+            UpdateCategoryRequest updateCategoryRequest = new UpdateCategoryRequest(updatedCategoryName);
+
+            assertThatThrownBy(() -> sut.update(nonExistentMemberDto, 1L, updateCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("식별자 " + nonExistentMemberDto.id() + "에 해당하는 멤버가 존재하지 않습니다.");
+        }
+
+        @Test
+        @DisplayName("카테고리 수정 실패 : 카테고리 이름 중복")
+        void updateFailDuplicatedCategory() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            Category category = categoryRepository.save(new Category("카테고리 1", member));
+            String duplicateCategory = "카테고리 2";
+            categoryRepository.save(new Category(duplicateCategory, member));
+            UpdateCategoryRequest updateCategoryRequest = new UpdateCategoryRequest(duplicateCategory);
+
+            assertThatThrownBy(() -> sut.update(MemberDto.from(member), category.getId(), updateCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("이름이 " + duplicateCategory + "인 카테고리가 이미 존재합니다.");
+        }
+
+        @Test
+        @DisplayName("카테고리 수정 실패 : 카테고리가 존재하지 않음")
+        void updateFailNotExistsCategory() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            String updatedCategoryName = "카테고리 수정";
+            UpdateCategoryRequest updateCategoryRequest = new UpdateCategoryRequest(updatedCategoryName);
+            Long notExistsId = 100L;
+
+            assertThatThrownBy(() -> sut.update(MemberDto.from(member), notExistsId, updateCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("식별자 " + notExistsId + "에 해당하는 카테고리가 존재하지 않습니다.");
+        }
+
+        @Test
+        @DisplayName("카테고리 수정 실패 : 카테고리 수정 권한이 없음")
+        void updateFailWithUnauthorized() {
+            Member member = memberRepository.save(MemberFixture.memberFixture());
+            Member otherMember = memberRepository.save(MemberFixture.createFixture("켬미"));
+            Category category = categoryRepository.save(new Category("카테고리 1", otherMember));
+            String updatedCategoryName = "카테고리 수정";
+            UpdateCategoryRequest updateCategoryRequest = new UpdateCategoryRequest(updatedCategoryName);
+
+            assertThatThrownBy(() -> sut.update(MemberDto.from(member), category.getId(), updateCategoryRequest))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("해당 카테고리에 대한 권한이 없습니다.");
+        }
+    }
+}