diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationRepository.kt b/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationRepository.kt
index d58329c..e6d300e 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationRepository.kt
@@ -18,6 +18,7 @@ interface AdminHashTagCurationRepository :
 interface AdminHashTagCurationQueryRepository {
     fun getContentHashTagCurationList(): List<GetAdminContentHashTagCurationResponse>
     fun searchHashTagCurationContentItem(curationId: Long, searchWord: String): List<SearchCurationItemResponse>
+    fun isExistsTag(tag: String): Boolean
 }
 
 @Repository
@@ -69,4 +70,12 @@ class AdminHashTagCurationQueryRepositoryImpl(
             )
             .fetch()
     }
+
+    override fun isExistsTag(tag: String): Boolean {
+        return queryFactory
+            .select(contentHashTagCuration.id)
+            .from(contentHashTagCuration)
+            .where(contentHashTagCuration.tag.eq(tag))
+            .fetch().isNotEmpty()
+    }
 }
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationService.kt
index 741d07d..93915a3 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/content/curation/tag/AdminHashTagCurationService.kt
@@ -20,6 +20,12 @@ class AdminHashTagCurationService(
 ) {
     @Transactional
     fun createContentHashTagCuration(request: CreateContentHashTagCurationRequest) {
+        val isExists = repository.isExistsTag(tag = request.tag.trim())
+
+        if (isExists) {
+            throw SodaException("이미 등록된 태그 입니다.")
+        }
+
         repository.save(
             ContentHashTagCuration(
                 tag = request.tag,