diff --git a/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java b/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
index 88887a6a..5a27085a 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
@@ -35,6 +35,11 @@ public List<Label> findLabelList() {
                 .collect(Collectors.toList());
     }
 
+    @Override
+    public boolean existsByLabelName(String labelName) {
+        return labelRepository.existsByLabelName(labelName);
+    }
+
     @Override
     public void save(Label label) {
         LabelEntity labelEntity = labelPersistenceMapper.toEntity(label);
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
index 0959c7fc..dda497dd 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
@@ -11,4 +11,5 @@ public interface LabelRepository extends JpaRepository<LabelEntity, Long> {
 
     List<LabelEntity> findByIsDeletedFalse();
 
+    boolean existsByLabelName(String labelName);
 }
diff --git a/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java b/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
index 8b0961ec..53c6e707 100644
--- a/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
+++ b/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
@@ -14,5 +14,5 @@ public interface LoadLabelPort {
 
     List<Label> findLabelList();
 
-
-}
+    boolean existsByLabelName(String labelName);
+}
\ No newline at end of file
diff --git a/src/main/java/clap/server/application/service/label/AddLabelService.java b/src/main/java/clap/server/application/service/label/AddLabelService.java
index 6979a053..c7a57905 100644
--- a/src/main/java/clap/server/application/service/label/AddLabelService.java
+++ b/src/main/java/clap/server/application/service/label/AddLabelService.java
@@ -4,9 +4,12 @@
 import clap.server.application.port.inbound.label.AddLabelUsecase;
 import clap.server.application.port.inbound.domain.MemberService;
 import clap.server.application.port.outbound.task.CommandLabelPort;
+import clap.server.application.port.outbound.task.LoadLabelPort;
 import clap.server.common.annotation.architecture.ApplicationService;
 import clap.server.domain.model.member.Member;
 import clap.server.domain.model.task.Label;
+import clap.server.exception.ApplicationException;
+import clap.server.exception.code.LabelErrorCode;
 import lombok.RequiredArgsConstructor;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -15,12 +18,16 @@
 public class AddLabelService implements AddLabelUsecase {
 
     private final MemberService memberService;
+    private final LoadLabelPort loadLabelPort;
     private final CommandLabelPort commandLabelPort;
 
     @Transactional
     @Override
     public void addLabel(Long adminId, CreateLabelRequest request) {
         Member admin = memberService.findActiveMember(adminId);
+        if (loadLabelPort.existsByLabelName(request.labelName())) {
+            throw new ApplicationException(LabelErrorCode.DUPLICATE_LABEL_NAME);
+        }
         Label label = Label.addLabel(admin, request.labelName(), request.labelColor());
         commandLabelPort.save(label);
     }
diff --git a/src/main/java/clap/server/exception/code/LabelErrorCode.java b/src/main/java/clap/server/exception/code/LabelErrorCode.java
index 1ba89e99..1394c8e4 100644
--- a/src/main/java/clap/server/exception/code/LabelErrorCode.java
+++ b/src/main/java/clap/server/exception/code/LabelErrorCode.java
@@ -7,7 +7,8 @@
 @Getter
 @RequiredArgsConstructor
 public enum LabelErrorCode implements BaseErrorCode{
-    LABEL_NOT_FOUND(HttpStatus.NOT_FOUND, "LABEL_001", "작업 구분을 찾을 수 없습니다.");
+    LABEL_NOT_FOUND(HttpStatus.NOT_FOUND, "LABEL_001", "작업 구분을 찾을 수 없습니다."),
+    DUPLICATE_LABEL_NAME(HttpStatus.BAD_REQUEST, "LABEL_002", "중복된 구분 이름입니다.");
 
 
     private final HttpStatus httpStatus;