diff --git a/backend/src/main/java/com/worlabel/domain/image/controller/ImageController.java b/backend/src/main/java/com/worlabel/domain/image/controller/ImageController.java
index a668802..a0e1d64 100644
--- a/backend/src/main/java/com/worlabel/domain/image/controller/ImageController.java
+++ b/backend/src/main/java/com/worlabel/domain/image/controller/ImageController.java
@@ -62,7 +62,7 @@ public class ImageController {
     @PutMapping("/{image_id}")
     @SwaggerApiSuccess(description = "이미지 폴더 이동.")
     @Operation(summary = "이미지 폴더 이동", description = "이미지가 위치한 폴더를 변경합니다.")
-    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
+    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
     public BaseResponse<Void> moveFolderImage(
             @CurrentUser final Integer memberId,
             @PathVariable("folder_id") final Integer folderId,
@@ -78,7 +78,7 @@ public class ImageController {
     @DeleteMapping("/{image_id}")
     @SwaggerApiSuccess(description = "이미지 삭제.")
     @Operation(summary = "이미지 삭제", description = "폴더에서 해당 이미지를 제거합니다.")
-    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
+    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
     public BaseResponse<Void> deleteImage(
             @CurrentUser final Integer memberId,
             @PathVariable("folder_id") final Integer folderId,
@@ -93,7 +93,7 @@ public class ImageController {
     @PutMapping("/{image_id}/status")
     @SwaggerApiSuccess(description = "이미지 상태 변경.")
     @Operation(summary = "이미지 상태 변경", description = "특정 이미지의 상태를 변경합니다.")
-    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
+    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.FOLDER_NOT_FOUND, ErrorCode.IMAGE_NOT_FOUND})
     public BaseResponse<ImageResponse> changeImageStatus(
             @CurrentUser final Integer memberId,
             @PathVariable("folder_id") final Integer folderId,
diff --git a/backend/src/main/java/com/worlabel/domain/image/service/ImageService.java b/backend/src/main/java/com/worlabel/domain/image/service/ImageService.java
index 4d30233..a6bfd31 100644
--- a/backend/src/main/java/com/worlabel/domain/image/service/ImageService.java
+++ b/backend/src/main/java/com/worlabel/domain/image/service/ImageService.java
@@ -7,7 +7,6 @@ import com.worlabel.domain.image.entity.dto.ImageResponse;
 import com.worlabel.domain.image.entity.dto.ImageStatusRequest;
 import com.worlabel.domain.image.repository.ImageRepository;
 import com.worlabel.domain.participant.entity.Participant;
-import com.worlabel.domain.participant.entity.PrivilegeType;
 import com.worlabel.domain.participant.repository.ParticipantRepository;
 import com.worlabel.global.exception.CustomException;
 import com.worlabel.global.exception.ErrorCode;
@@ -121,10 +120,10 @@ public class ImageService {
     // 편집자 이상의 권한을 확인하는 메서드
     private void checkEditorParticipant(final Integer memberId, final Integer projectId) {
         Participant participant = participantRepository.findByMemberIdAndProjectId(memberId, projectId)
-                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED));
+                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED));
 
         if (!participant.getPrivilege().isEditeAuth()) {
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 
diff --git a/backend/src/main/java/com/worlabel/domain/label/service/LabelService.java b/backend/src/main/java/com/worlabel/domain/label/service/LabelService.java
index b7bfb67..01a2b41 100644
--- a/backend/src/main/java/com/worlabel/domain/label/service/LabelService.java
+++ b/backend/src/main/java/com/worlabel/domain/label/service/LabelService.java
@@ -174,7 +174,7 @@ public class LabelService {
     private void checkEditorExistParticipant(final Integer memberId, final Integer projectId) {
         log.debug("권한체크");
         if (participantRepository.doesParticipantUnauthorizedExistByMemberIdAndProjectId(memberId, projectId)) {
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 }
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/controller/LabelCategoryController.java b/backend/src/main/java/com/worlabel/domain/labelcategory/controller/LabelCategoryController.java
new file mode 100644
index 0000000..17a12c5
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/controller/LabelCategoryController.java
@@ -0,0 +1,66 @@
+package com.worlabel.domain.labelcategory.controller;
+
+import com.worlabel.domain.labelcategory.entity.dto.LabelCategoryRequest;
+import com.worlabel.domain.labelcategory.entity.dto.LabelCategoryResponse;
+import com.worlabel.domain.labelcategory.service.LabelCategoryService;
+import com.worlabel.global.annotation.CurrentUser;
+import com.worlabel.global.config.swagger.SwaggerApiError;
+import com.worlabel.global.config.swagger.SwaggerApiSuccess;
+import com.worlabel.global.exception.ErrorCode;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.repository.query.Param;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@Tag(name = "레이블 카테고리 관련 API")
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/projects/{project_id}/categories")
+public class LabelCategoryController {
+
+    private final LabelCategoryService categoryService;
+
+    @Operation(summary = "레이블 카테고리 생성", description = "프로젝트에 카테고리를 생성합니다.")
+    @SwaggerApiSuccess(description = "카테고리 성공적으로 생성합니다.")
+    @SwaggerApiError({ErrorCode.EMPTY_REQUEST_PARAMETER, ErrorCode.SERVER_ERROR})
+    @PostMapping
+    public LabelCategoryResponse createFolder(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId, @RequestBody final LabelCategoryRequest categoryRequest) {
+        return categoryService.createCategory(memberId, projectId, categoryRequest);
+    }
+
+    @Operation(summary = "레이블 카테고리 단일 조회", description = "레이블 카테고리를 조회합니다.")
+    @SwaggerApiSuccess(description = "카테고리 성공적으로 조회합니다.")
+    @SwaggerApiError({ErrorCode.EMPTY_REQUEST_PARAMETER, ErrorCode.SERVER_ERROR})
+    @GetMapping("/{category_id}")
+    public LabelCategoryResponse getCategoryById(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId, @PathVariable("category_id") final Integer categoryId) {
+        return categoryService.getCategoryById(memberId, projectId, categoryId);
+    }
+
+    @Operation(summary = "레이블 카테고리 존재 여부 조회", description = "해당 프로젝트에 같은 레이블 카테고리 이름이 있는지 조회합니다.")
+    @SwaggerApiSuccess(description = "카테고리 존재 여부를 조회합니다.")
+    @SwaggerApiError({ErrorCode.EMPTY_REQUEST_PARAMETER, ErrorCode.SERVER_ERROR})
+    @GetMapping("/exist")
+    public boolean existByCategoryName(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId, @Param("categoryName") final String categoryName) {
+        return categoryService.existByCategoryName(memberId, projectId, categoryName);
+    }
+
+    @Operation(summary = "레이블 카테고리 리스트 조회", description = "레이블 카테고리 리스트를 조회합니다..")
+    @SwaggerApiSuccess(description = "카테고리 리스트를 성공적으로 조회합니다.")
+    @SwaggerApiError({ErrorCode.EMPTY_REQUEST_PARAMETER, ErrorCode.SERVER_ERROR})
+    @GetMapping
+    public List<LabelCategoryResponse> getCategoryList(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId) {
+        return categoryService.getCategoryList(memberId, projectId);
+    }
+
+
+    @Operation(summary = "카테고리 삭제", description = "카테고리를 삭제합니다.")
+    @SwaggerApiError({ErrorCode.EMPTY_REQUEST_PARAMETER, ErrorCode.SERVER_ERROR})
+    @SwaggerApiSuccess(description = "카테고리를 성공적으로 삭제합니다.")
+    @DeleteMapping("/{category_id}")
+    public void deleteCategoryById(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId, @PathVariable("category_id") final Integer categoryId) {
+        categoryService.deleteCategory(memberId, projectId, categoryId);
+    }
+}
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/entity/LabelCategory.java b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/LabelCategory.java
new file mode 100644
index 0000000..ec2cd67
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/LabelCategory.java
@@ -0,0 +1,45 @@
+package com.worlabel.domain.labelcategory.entity;
+
+
+import com.worlabel.domain.project.entity.Project;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Entity
+@Table(name = "label_category")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class LabelCategory {
+
+    /**
+     * 레이블 카테고리 PK
+     */
+    @Id
+    @Column(name = "label_category_id", nullable = false)
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    /**
+     * 레이블 카테고리 이름
+     */
+    @Column(name = "name", nullable = false)
+    private String name;
+
+    /**
+     * 속한 프로젝트
+     */
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "project_id", nullable = false)
+    private Project project;
+
+    private LabelCategory(final String name,final Project project) {
+        this.name = name;
+        this.project = project;
+    }
+
+    public static LabelCategory of(final String title, final Project project) {
+        return new LabelCategory(title, project);
+    }
+}
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryRequest.java b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryRequest.java
new file mode 100644
index 0000000..851da52
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryRequest.java
@@ -0,0 +1,16 @@
+package com.worlabel.domain.labelcategory.entity.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Schema(name = "카테고리 요청 DTO", description = "카테고리 생성 및 수정을 위한 요청 DTO")
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class LabelCategoryRequest {
+
+    @Schema(description = "카테고리 이름", example = "Car")
+    private String categoryName;
+}
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryResponse.java b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryResponse.java
new file mode 100644
index 0000000..ab5507b
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/entity/dto/LabelCategoryResponse.java
@@ -0,0 +1,22 @@
+package com.worlabel.domain.labelcategory.entity.dto;
+
+import com.worlabel.domain.labelcategory.entity.LabelCategory;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+@Schema(name = "카테고리 응답 DTO", description = "카테고리 조회 응답 DTO")
+public class LabelCategoryResponse {
+
+    @Schema(description = "카테고리 ID", example = "1")
+    private Integer id;
+
+    @Schema(description = "카테고리 이름", example = "Car")
+    private String name;
+
+    public static LabelCategoryResponse from(LabelCategory labelCategory) {
+        return new LabelCategoryResponse(labelCategory.getId(), labelCategory.getName());
+    }
+}
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/repository/LabelCategoryRepository.java b/backend/src/main/java/com/worlabel/domain/labelcategory/repository/LabelCategoryRepository.java
new file mode 100644
index 0000000..1d69d49
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/repository/LabelCategoryRepository.java
@@ -0,0 +1,13 @@
+package com.worlabel.domain.labelcategory.repository;
+
+import com.worlabel.domain.labelcategory.entity.LabelCategory;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface LabelCategoryRepository extends JpaRepository<LabelCategory, Integer> {
+
+    List<LabelCategory> findAllByProjectId(Integer projectId);
+
+    boolean existsByNameAndProjectId(String categoryName, Integer projectId);
+}
diff --git a/backend/src/main/java/com/worlabel/domain/labelcategory/service/LabelCategoryService.java b/backend/src/main/java/com/worlabel/domain/labelcategory/service/LabelCategoryService.java
new file mode 100644
index 0000000..a4c836c
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/labelcategory/service/LabelCategoryService.java
@@ -0,0 +1,69 @@
+package com.worlabel.domain.labelcategory.service;
+
+import com.worlabel.domain.labelcategory.entity.LabelCategory;
+import com.worlabel.domain.labelcategory.entity.dto.LabelCategoryRequest;
+import com.worlabel.domain.labelcategory.entity.dto.LabelCategoryResponse;
+import com.worlabel.domain.labelcategory.repository.LabelCategoryRepository;
+import com.worlabel.domain.participant.service.ParticipantService;
+import com.worlabel.domain.project.entity.Project;
+import com.worlabel.domain.project.service.ProjectService;
+import com.worlabel.global.exception.CustomException;
+import com.worlabel.global.exception.ErrorCode;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class LabelCategoryService {
+
+    private final LabelCategoryRepository labelCategoryRepository;
+    private final ParticipantService participantService;
+    private final ProjectService projectService;
+
+    public LabelCategoryResponse createCategory(final Integer memberId, final Integer projectId, final LabelCategoryRequest categoryRequest) {
+        participantService.checkEditorUnauthorized(memberId, projectId);
+
+        // 이미 존재하는지 확인 있다면 예외
+        if (labelCategoryRepository.existsByNameAndProjectId(categoryRequest.getCategoryName(), projectId)) {
+            throw new CustomException(ErrorCode.PROJECT_CATEGORY_EXIST);
+        }
+
+        Project project = projectService.getProject(projectId);
+
+        LabelCategory labelCategory = LabelCategory.of(categoryRequest.getCategoryName(), project);
+        labelCategoryRepository.save(labelCategory);
+
+        return LabelCategoryResponse.from(labelCategory);
+    }
+
+    public void deleteCategory(final int memberId, final int projectId, final int categoryId) {
+        participantService.checkEditorUnauthorized(memberId, projectId);
+        LabelCategory category = getCategory(categoryId);
+        labelCategoryRepository.delete(category);
+    }
+
+    public LabelCategoryResponse getCategoryById(final int memberId, final int projectId, final int categoryId) {
+        participantService.checkViewerUnauthorized(memberId, projectId);
+        return LabelCategoryResponse.from(getCategory(categoryId));
+    }
+
+    public boolean existByCategoryName(final int memberId, final int projectId, final String categoryName) {
+        participantService.checkViewerUnauthorized(memberId, projectId);
+        return labelCategoryRepository.existsByNameAndProjectId(categoryName, projectId);
+    }
+
+    public List<LabelCategoryResponse> getCategoryList(final Integer memberId, final Integer projectId) {
+        participantService.checkViewerUnauthorized(memberId, projectId);
+        List<LabelCategory> labelCategoryList = labelCategoryRepository.findAllByProjectId(projectId);
+        return labelCategoryList.stream().map(LabelCategoryResponse::from).toList();
+    }
+
+    private LabelCategory getCategory(final Integer categoryId) {
+        return labelCategoryRepository.findById(categoryId).orElseThrow(() -> new CustomException(ErrorCode.PROJECT_CATEGORY_NOT_FOUND));
+    }
+
+}
diff --git a/backend/src/main/java/com/worlabel/domain/participant/service/ParticipantService.java b/backend/src/main/java/com/worlabel/domain/participant/service/ParticipantService.java
new file mode 100644
index 0000000..632658d
--- /dev/null
+++ b/backend/src/main/java/com/worlabel/domain/participant/service/ParticipantService.java
@@ -0,0 +1,36 @@
+package com.worlabel.domain.participant.service;
+
+import com.worlabel.domain.participant.repository.ParticipantRepository;
+import com.worlabel.global.exception.CustomException;
+import com.worlabel.global.exception.ErrorCode;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ParticipantService {
+
+    private final ParticipantRepository participantRepository;
+
+    /**
+     * 프로젝트 수정 권한이 없으면 예외
+     * @param memberId 사용자 ID
+     * @param projectId 프로젝트 ID
+     */
+    public void checkEditorUnauthorized(final Integer memberId, final Integer projectId){
+        if (participantRepository.doesParticipantUnauthorizedExistByMemberIdAndProjectId(memberId, projectId)) {
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
+        }
+    }
+
+    /**
+     * 프로젝트 View 권한이 없으면 예외
+     */
+    public void checkViewerUnauthorized(final Integer memberId, final Integer projectId){
+        if (participantRepository.doesParticipantUnauthorizedExistByMemberIdAndProjectId(memberId, projectId)) {
+            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+        }
+    }
+}
diff --git a/backend/src/main/java/com/worlabel/domain/project/controller/ProjectController.java b/backend/src/main/java/com/worlabel/domain/project/controller/ProjectController.java
index 5affa25..bef2493 100644
--- a/backend/src/main/java/com/worlabel/domain/project/controller/ProjectController.java
+++ b/backend/src/main/java/com/worlabel/domain/project/controller/ProjectController.java
@@ -44,7 +44,7 @@ public class ProjectController {
 
     @Operation(summary = "프로젝트 조회", description = "프로젝트를 조회합니다.")
     @SwaggerApiSuccess(description = "프로젝트를 성공적으로 조회합니다.")
-    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
+    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
     @GetMapping("/projects/{project_id}")
     public BaseResponse<ProjectResponse> getProject(@CurrentUser final Integer memberId, @PathVariable("project_id") final Integer projectId) {
         ProjectResponse project = projectService.getProjectById(memberId, projectId);
@@ -66,7 +66,7 @@ public class ProjectController {
 
     @Operation(summary = "프로젝트 수정", description = "프로젝트를 수정합니다.")
     @SwaggerApiSuccess(description = "프로젝트를 성공적으로 수정합니다.")
-    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
+    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
     @PutMapping("/projects/{project_id}")
     public BaseResponse<ProjectResponse> updateProject(
             @CurrentUser final Integer memberId,
@@ -89,7 +89,7 @@ public class ProjectController {
 
     @Operation(summary = "프로젝트 삭제", description = "프로젝트를 삭제합니다.")
     @SwaggerApiSuccess(description = "프로젝트를 성공적으로 삭제합니다.")
-    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
+    @SwaggerApiError({ErrorCode.PROJECT_NOT_FOUND, ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED, ErrorCode.SERVER_ERROR})
     @DeleteMapping("/projects/{project_id}")
     public BaseResponse<Void> deleteProject(@CurrentUser final Integer memberId,
                                             @PathVariable("project_id") final Integer projectId) {
diff --git a/backend/src/main/java/com/worlabel/domain/project/entity/Project.java b/backend/src/main/java/com/worlabel/domain/project/entity/Project.java
index e9d6d6d..a7c315b 100644
--- a/backend/src/main/java/com/worlabel/domain/project/entity/Project.java
+++ b/backend/src/main/java/com/worlabel/domain/project/entity/Project.java
@@ -1,6 +1,7 @@
 package com.worlabel.domain.project.entity;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.worlabel.domain.labelcategory.entity.LabelCategory;
 import com.worlabel.domain.workspace.entity.Workspace;
 import com.worlabel.global.common.BaseEntity;
 import jakarta.persistence.*;
@@ -8,6 +9,9 @@ import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Getter
 @Entity
 @Table(name = "project")
@@ -43,6 +47,12 @@ public class Project extends BaseEntity {
     @Enumerated(EnumType.STRING)
     private ProjectType projectType;
 
+    /**
+     * 프로젝트에 속한 카테고리
+     */
+    @OneToMany(mappedBy = "project", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<LabelCategory> category = new ArrayList<>();
+
     private Project(final String title, final Workspace workspace, final ProjectType projectType) {
         this.title = title;
         this.workspace = workspace;
diff --git a/backend/src/main/java/com/worlabel/domain/project/service/ProjectService.java b/backend/src/main/java/com/worlabel/domain/project/service/ProjectService.java
index 3cb564e..2ad79c3 100644
--- a/backend/src/main/java/com/worlabel/domain/project/service/ProjectService.java
+++ b/backend/src/main/java/com/worlabel/domain/project/service/ProjectService.java
@@ -108,7 +108,7 @@ public class ProjectService {
         checkNotAdminParticipant(participantRequest.getMemberId(), projectId);
 
         Participant participant = participantRepository.findByMemberIdAndProjectId(participantRequest.getMemberId(), projectId)
-                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED));
+                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED));
         participant.updatePrivilege(participantRequest.getPrivilegeType());
     }
 
@@ -118,7 +118,7 @@ public class ProjectService {
         checkNotAdminParticipant(removeMemberId, projectId);
 
         Participant participant = participantRepository.findByMemberIdAndProjectId(removeMemberId, projectId)
-                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED));
+                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED));
 
         participantRepository.delete(participant);
     }
@@ -150,6 +150,11 @@ public class ProjectService {
         }
     }
 
+    public Project getProject(final Integer projectId) {
+        return projectRepository.findById(projectId)
+                .orElseThrow(() -> new CustomException(ErrorCode.PROJECT_NOT_FOUND));
+    }
+
     private Workspace getWorkspace(final Integer memberId, final Integer workspaceId) {
         return workspaceRepository.findByMemberIdAndId(memberId, workspaceId)
                 .orElseThrow(() -> new CustomException(ErrorCode.WORKSPACE_NOT_FOUND));
@@ -160,32 +165,27 @@ public class ProjectService {
                 .orElseThrow(() -> new CustomException(ErrorCode.USER_NOT_FOUND));
     }
 
-    private Project getProject(final Integer projectId) {
-        return projectRepository.findById(projectId)
-                .orElseThrow(() -> new CustomException(ErrorCode.PROJECT_NOT_FOUND));
-    }
-
     private void checkEditorParticipant(final Integer memberId, final Integer projectId) {
         if(participantRepository.doesParticipantUnauthorizedExistByMemberIdAndProjectId(memberId,projectId)){
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 
     private void checkExistParticipant(final Integer memberId, final Integer projectId) {
         if (!participantRepository.existsByMemberIdAndProjectId(memberId, projectId)) {
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 
     private void checkAdminParticipant(final Integer memberId, final Integer projectId) {
         if (!participantRepository.existsByProjectIdAndMemberIdAndPrivilege(projectId, memberId, PrivilegeType.ADMIN)) {
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 
     private void checkNotAdminParticipant(final Integer memberId, final Integer projectId) {
         if (participantRepository.existsByProjectIdAndMemberIdAndPrivilege(projectId, memberId, PrivilegeType.ADMIN)) {
-            throw new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED);
+            throw new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED);
         }
     }
 
diff --git a/backend/src/main/java/com/worlabel/domain/workspace/service/WorkspaceService.java b/backend/src/main/java/com/worlabel/domain/workspace/service/WorkspaceService.java
index 99cdc87..e667150 100644
--- a/backend/src/main/java/com/worlabel/domain/workspace/service/WorkspaceService.java
+++ b/backend/src/main/java/com/worlabel/domain/workspace/service/WorkspaceService.java
@@ -127,6 +127,6 @@ public class WorkspaceService {
 
     private WorkspaceParticipant getWorkspaceParticipant(final Integer newMemberId, final Workspace workspace) {
         return workspaceParticipantRepository.findByMemberIdAndWorkspace(newMemberId, workspace)
-                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_UNAUTHORIZED));
+                .orElseThrow(() -> new CustomException(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED));
     }
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/worlabel/global/config/CustomWebSocketConfig1.java b/backend/src/main/java/com/worlabel/global/config/CustomWebSocketConfig1.java
deleted file mode 100644
index 456d455..0000000
--- a/backend/src/main/java/com/worlabel/global/config/CustomWebSocketConfig1.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package com.worlabel.global.config;
-
-public class CustomWebSocketConfig1 {
-}
diff --git a/backend/src/main/java/com/worlabel/global/exception/ErrorCode.java b/backend/src/main/java/com/worlabel/global/exception/ErrorCode.java
index 5e473cf..afa7f9a 100644
--- a/backend/src/main/java/com/worlabel/global/exception/ErrorCode.java
+++ b/backend/src/main/java/com/worlabel/global/exception/ErrorCode.java
@@ -37,10 +37,13 @@ public enum ErrorCode {
     // Project - 4000
     PROJECT_NOT_FOUND(HttpStatus.NOT_FOUND, 4000, "프로젝트를 찾을 수 없습니다"),
     PROJECT_IMAGE_MISMATCH(HttpStatus.BAD_REQUEST, 4001, "해당 프로젝트에는 존재하지 않는 이미지입니다."),
+    PROJECT_CATEGORY_EXIST(HttpStatus.BAD_REQUEST,4002, "이미 존재하는 카테고리입니다."),
+    PROJECT_CATEGORY_NOT_FOUND(HttpStatus.NOT_FOUND, 4003, "해당 카테고리를 찾을 수 없습니다."),
 
     // Participant - 5000,
-    PARTICIPANT_UNAUTHORIZED(HttpStatus.UNAUTHORIZED, 5000, "해당 프로젝트에 접근 권한이 없습니다."),
+    PARTICIPANT_UNAUTHORIZED(HttpStatus.UNAUTHORIZED, 5000, "해당 프로젝트에 참여하고 있지않습니다."),
     PARTICIPANT_BAD_REQUEST(HttpStatus.UNAUTHORIZED, 5001, "자기 자신의 권한을 바꿀 수 없습니다."),
+    PARTICIPANT_EDITOR_UNAUTHORIZED(HttpStatus.UNAUTHORIZED, 5002, "해당 프로젝트에 수정 권한이 없습니다."),
 
     // Folder - 6000,
     FOLDER_NOT_FOUND(HttpStatus.NOT_FOUND, 6000, "해당 폴더를 찾을 수 없습니다."),
@@ -53,8 +56,9 @@ public enum ErrorCode {
     AI_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, 8000, "AI 서버 오류 입니다."),
 
     // Comment - 9000,
-    COMMENT_NOT_FOUND(HttpStatus.NOT_FOUND, 9000, "해당 댓글을 찾을 수 없습니다.");
+    COMMENT_NOT_FOUND(HttpStatus.NOT_FOUND, 9000, "해당 댓글을 찾을 수 없습니다."),
 
+    ;
     private final HttpStatus status;
     private final int code;
     private final String message;
diff --git a/backend/src/test/java/com/worlabel/domain/image/service/ImageServiceUnitTest.java b/backend/src/test/java/com/worlabel/domain/image/service/ImageServiceUnitTest.java
index 6bafa02..aaa6a3c 100644
--- a/backend/src/test/java/com/worlabel/domain/image/service/ImageServiceUnitTest.java
+++ b/backend/src/test/java/com/worlabel/domain/image/service/ImageServiceUnitTest.java
@@ -85,7 +85,7 @@ class ImageServiceUnitTest {
         // when & then
         assertThatThrownBy(() -> imageService.uploadImageList(List.of(mock(MultipartFile.class)), 1, 1, 1))
                 .isInstanceOf(CustomException.class)
-                .hasMessageContaining(ErrorCode.PARTICIPANT_UNAUTHORIZED.getMessage());
+                .hasMessageContaining(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED.getMessage());
     }
 
     @DisplayName("이미지 업로드 성공")
diff --git a/backend/src/test/java/com/worlabel/domain/project/service/ProjectServiceUnitTest.java b/backend/src/test/java/com/worlabel/domain/project/service/ProjectServiceUnitTest.java
index 71313c2..b535d0b 100644
--- a/backend/src/test/java/com/worlabel/domain/project/service/ProjectServiceUnitTest.java
+++ b/backend/src/test/java/com/worlabel/domain/project/service/ProjectServiceUnitTest.java
@@ -2,7 +2,6 @@ package com.worlabel.domain.project.service;
 
 import com.worlabel.domain.member.entity.Member;
 import com.worlabel.domain.member.repository.MemberRepository;
-import com.worlabel.domain.participant.entity.Participant;
 import com.worlabel.domain.participant.entity.PrivilegeType;
 import com.worlabel.domain.participant.repository.ParticipantRepository;
 import com.worlabel.domain.project.entity.Project;
@@ -142,7 +141,7 @@ class ProjectServiceUnitTest {
         // when & then
         assertThatThrownBy(() -> projectService.updateProject(1, 1, request))
                 .isInstanceOf(CustomException.class)
-                .hasMessageContaining(ErrorCode.PARTICIPANT_UNAUTHORIZED.getMessage());
+                .hasMessageContaining(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED.getMessage());
     }
 
     @DisplayName("프로젝트 수정에 성공하면 수정된 프로젝트가 반환된다.")
@@ -172,7 +171,7 @@ class ProjectServiceUnitTest {
         // when & then
         assertThatThrownBy(() -> projectService.deleteProject(1, 1))
                 .isInstanceOf(CustomException.class)
-                .hasMessageContaining(ErrorCode.PARTICIPANT_UNAUTHORIZED.getMessage());
+                .hasMessageContaining(ErrorCode.PARTICIPANT_EDITOR_UNAUTHORIZED.getMessage());
     }
 
     @DisplayName("프로젝트 삭제에 성공하면 예외 없이 수행된다.")