diff --git a/src/main/java/clap/server/adapter/outbound/persistense/CategoryPersistenceAdapter.java b/src/main/java/clap/server/adapter/outbound/persistense/CategoryPersistenceAdapter.java
index c34d1539..e9cd2c00 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/CategoryPersistenceAdapter.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/CategoryPersistenceAdapter.java
@@ -50,14 +50,22 @@ public List<Category> findSubCategory() {
     }
 
     @Override
-    public boolean existsMainCategoryByNameOrCode(String name, String code) {
-        return categoryRepository.existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(name, code);
+    public boolean existsMainCategoryByNameOrCode(Category category, String name, String code) {
+        if (category == null) {
+            return categoryRepository.existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(name, code);
+        }
+        CategoryEntity categoryEntity = categoryPersistenceMapper.toEntity(category);
+        return categoryRepository.existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(categoryEntity, name, code);
     }
 
     @Override
-    public boolean existsSubCategoryByNameOrCode(Category category, String name, String code) {
+    public boolean existsSubCategoryByNameOrCode(Category category, Category mainCategory, String name, String code) {
+        CategoryEntity mainCategoryEntity = categoryPersistenceMapper.toEntity(mainCategory);
+        if (category == null) {
+            return categoryRepository.existsByMainCategoryAndIsDeletedFalseAndNameOrCode(mainCategoryEntity, name, code);
+        }
         CategoryEntity categoryEntity = categoryPersistenceMapper.toEntity(category);
-        return categoryRepository.existsByMainCategoryAndIsDeletedFalseAndNameOrCode(categoryEntity, name, code);
+        return categoryRepository.existsByMainCategoryAndIsDeletedFalseAndNameOrCode(categoryEntity, mainCategoryEntity, name, code);
     }
 
 
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/CategoryRepository.java b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/CategoryRepository.java
index b2cdf46c..73a42a9c 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/CategoryRepository.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/CategoryRepository.java
@@ -1,4 +1,5 @@
 package clap.server.adapter.outbound.persistense.repository.task;
+
 import clap.server.adapter.outbound.persistense.entity.task.CategoryEntity;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
@@ -11,12 +12,28 @@
 public interface CategoryRepository extends JpaRepository<CategoryEntity, Long> {
 
     List<CategoryEntity> findByIsDeletedFalse();
+
     List<CategoryEntity> findByIsDeletedFalseAndMainCategoryIsNull();
+
     List<CategoryEntity> findByIsDeletedFalseAndMainCategoryIsNotNull();
 
     @Query("SELECT CASE WHEN COUNT(c) > 0 THEN true ELSE false END FROM CategoryEntity c WHERE c.mainCategory IS NULL AND c.isDeleted = false AND (c.name = :name OR c.code = :code)")
-    boolean existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(@Param("name") String name, @Param("code") String code);
+    boolean existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(@Param("name") String name,
+                                                                     @Param("code") String code);
+
+    @Query("SELECT CASE WHEN COUNT(c) > 0 THEN true ELSE false END FROM CategoryEntity c WHERE c.mainCategory IS NULL AND c.isDeleted = false AND c != :category AND (c.name = :name OR c.code = :code)")
+    boolean existsByNameOrCodeAndMainCategoryIsNullAndIsDeletedFalse(@Param("category") CategoryEntity category,
+                                                                     @Param("name") String name,
+                                                                     @Param("code") String code);
 
     @Query("SELECT CASE WHEN COUNT(c) > 0 THEN true ELSE false END FROM CategoryEntity c WHERE c.mainCategory = :mainCategory AND c.isDeleted = false AND (c.name = :name OR c.code = :code)")
-    boolean existsByMainCategoryAndIsDeletedFalseAndNameOrCode(@Param("mainCategory")CategoryEntity mainCategory, @Param("name") String name, @Param("code") String code);
+    boolean existsByMainCategoryAndIsDeletedFalseAndNameOrCode(@Param("mainCategory") CategoryEntity mainCategory,
+                                                               @Param("name") String name,
+                                                               @Param("code") String code);
+
+    @Query("SELECT CASE WHEN COUNT(c) > 0 THEN true ELSE false END FROM CategoryEntity c WHERE c.mainCategory = :mainCategory AND c.isDeleted = false AND c != :category AND (c.name = :name OR c.code = :code)")
+    boolean existsByMainCategoryAndIsDeletedFalseAndNameOrCode(@Param("category") CategoryEntity category,
+                                                               @Param("mainCategory") CategoryEntity mainCategory,
+                                                               @Param("name") String name,
+                                                               @Param("code") String code);
 }
\ No newline at end of file
diff --git a/src/main/java/clap/server/application/port/outbound/task/LoadCategoryPort.java b/src/main/java/clap/server/application/port/outbound/task/LoadCategoryPort.java
index 9349f583..eabf1c2d 100644
--- a/src/main/java/clap/server/application/port/outbound/task/LoadCategoryPort.java
+++ b/src/main/java/clap/server/application/port/outbound/task/LoadCategoryPort.java
@@ -12,7 +12,7 @@ public interface LoadCategoryPort {
     List<Category> findMainCategory();
     List<Category> findSubCategory();
 
-    boolean existsMainCategoryByNameOrCode(String name, String code);
+    boolean existsMainCategoryByNameOrCode(Category category, String name, String code);
 
-    boolean existsSubCategoryByNameOrCode(Category category, String name, String code);
+    boolean existsSubCategoryByNameOrCode(Category category, Category mainCategory, String name, String code);
 }
diff --git a/src/main/java/clap/server/application/service/admin/AddCategoryService.java b/src/main/java/clap/server/application/service/admin/AddCategoryService.java
index ff2476cb..f3d74323 100644
--- a/src/main/java/clap/server/application/service/admin/AddCategoryService.java
+++ b/src/main/java/clap/server/application/service/admin/AddCategoryService.java
@@ -29,7 +29,7 @@ public class AddCategoryService implements AddMainCategoryUsecase, AddSubCategor
     @Transactional
     public void addMainCategory(Long adminId, String code, String name) {
         Optional<Member> activeMember = loadMemberPort.findActiveMemberById(adminId);
-        if (loadCategoryPort.existsMainCategoryByNameOrCode(name, code)) throw new ApplicationException(CATEGORY_DUPLICATE);
+        if (loadCategoryPort.existsMainCategoryByNameOrCode(null, name, code)) throw new ApplicationException(CATEGORY_DUPLICATE);
         Category mainCategory = Category.createMainCategory(
                 activeMember.orElseThrow(() -> new ApplicationException(ACTIVE_MEMBER_NOT_FOUND)),
                 code, name);
@@ -42,7 +42,7 @@ public void addSubCategory(Long adminId, Long mainCategoryId, String code, Strin
         Member activeMember = loadMemberPort.findActiveMemberById(adminId).orElseThrow(() -> new ApplicationException(ACTIVE_MEMBER_NOT_FOUND));
         Category mainCategory = loadCategoryPort.findById(mainCategoryId).orElseThrow(() -> new ApplicationException(CATEGORY_NOT_FOUND));
 
-        if (loadCategoryPort.existsSubCategoryByNameOrCode(mainCategory, name, code)) throw new ApplicationException(CATEGORY_DUPLICATE);
+        if (loadCategoryPort.existsSubCategoryByNameOrCode(null, mainCategory, name, code)) throw new ApplicationException(CATEGORY_DUPLICATE);
         Category subCategory = Category.createSubCategory(activeMember, mainCategory,code, name, descriptionExample);
         commandCategoryPort.save(subCategory);
     }
diff --git a/src/main/java/clap/server/application/service/admin/UpdateCategoryService.java b/src/main/java/clap/server/application/service/admin/UpdateCategoryService.java
index 4c06415b..7a866773 100644
--- a/src/main/java/clap/server/application/service/admin/UpdateCategoryService.java
+++ b/src/main/java/clap/server/application/service/admin/UpdateCategoryService.java
@@ -29,9 +29,9 @@ public void updateCategory(Long adminId, Long categoryId, String name, String co
         Category category = loadCategoryPort.findById(categoryId).orElseThrow(() -> new ApplicationException(CATEGORY_NOT_FOUND));
         boolean isDuplicate;
         if (category.getMainCategory() == null) {
-            isDuplicate = loadCategoryPort.existsMainCategoryByNameOrCode(name, code);
+            isDuplicate = loadCategoryPort.existsMainCategoryByNameOrCode(category, name, code);
         } else {
-            isDuplicate = loadCategoryPort.existsSubCategoryByNameOrCode(category.getMainCategory(), name, code);
+            isDuplicate = loadCategoryPort.existsSubCategoryByNameOrCode(category, category.getMainCategory(), name, code);
         }
         if (isDuplicate) throw new ApplicationException(CATEGORY_DUPLICATE);