diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentComment.kt b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentComment.kt
index 0f345e3..a84e468 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentComment.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentComment.kt
@@ -18,6 +18,7 @@ data class AudioContentComment(
     var comment: String,
     @Column(nullable = true)
     var donationCan: Int? = null,
+    val isSecret: Boolean = false,
     var isActive: Boolean = true
 ) : BaseEntity() {
     @ManyToOne(fetch = FetchType.LAZY)
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentController.kt b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentController.kt
index dc153e2..d400c55 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentController.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentController.kt
@@ -27,6 +27,7 @@ class AudioContentCommentController(private val service: AudioContentCommentServ
                 comment = request.comment,
                 audioContentId = request.contentId,
                 parentId = request.parentId,
+                isSecret = request.isSecret,
                 member = member
             )
         )
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentService.kt
index d41e3d6..0daafc3 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/AudioContentCommentService.kt
@@ -2,6 +2,7 @@ package kr.co.vividnext.sodalive.content.comment
 
 import kr.co.vividnext.sodalive.common.SodaException
 import kr.co.vividnext.sodalive.content.AudioContentRepository
+import kr.co.vividnext.sodalive.content.order.OrderRepository
 import kr.co.vividnext.sodalive.fcm.FcmEvent
 import kr.co.vividnext.sodalive.fcm.FcmEventType
 import kr.co.vividnext.sodalive.member.Member
@@ -20,12 +21,19 @@ class AudioContentCommentService(
     private val blockMemberRepository: BlockMemberRepository,
     private val audioContentRepository: AudioContentRepository,
     private val applicationEventPublisher: ApplicationEventPublisher,
+    private val orderRepository: OrderRepository,
 
     @Value("\${cloud.aws.cloud-front.host}")
     private val cloudFrontHost: String
 ) {
     @Transactional
-    fun registerComment(member: Member, comment: String, audioContentId: Long, parentId: Long? = null) {
+    fun registerComment(
+        member: Member,
+        comment: String,
+        audioContentId: Long,
+        parentId: Long? = null,
+        isSecret: Boolean = false
+    ) {
         val audioContent = audioContentRepository.findByIdOrNull(id = audioContentId)
             ?: throw SodaException("잘못된 콘텐츠 입니다.\n다시 시도해 주세요.")
 
@@ -33,7 +41,16 @@ class AudioContentCommentService(
         val isBlocked = blockMemberRepository.isBlocked(blockedMemberId = member.id!!, memberId = creator.id!!)
         if (isBlocked) throw SodaException("${creator.nickname}님의 요청으로 댓글쓰기가 제한됩니다.")
 
-        val audioContentComment = AudioContentComment(comment = comment)
+        val (isExistsAudioContent, _) = orderRepository.isExistOrderedAndOrderType(
+            memberId = member.id!!,
+            contentId = audioContent.id!!
+        )
+
+        if (isSecret && !isExistsAudioContent) {
+            throw SodaException("콘텐츠 구매 후 비밀댓글을 등록할 수 있습니다.")
+        }
+
+        val audioContentComment = AudioContentComment(comment = comment, isSecret = isSecret)
         audioContentComment.audioContent = audioContent
         audioContentComment.member = member
 
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/RegisterCommentRequest.kt b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/RegisterCommentRequest.kt
index df29747..a5fc8ac 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/RegisterCommentRequest.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/comment/RegisterCommentRequest.kt
@@ -1,3 +1,8 @@
 package kr.co.vividnext.sodalive.content.comment
 
-data class RegisterCommentRequest(val comment: String, val contentId: Long, val parentId: Long?)
+data class RegisterCommentRequest(
+    val comment: String,
+    val contentId: Long,
+    val parentId: Long?,
+    val isSecret: Boolean = false
+)