diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/audition/AuditionApplicant.kt b/src/main/kotlin/kr/co/vividnext/sodalive/audition/AuditionApplicant.kt
index 21dc568..fcba813 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/audition/AuditionApplicant.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/audition/AuditionApplicant.kt
@@ -11,7 +11,7 @@ import javax.persistence.ManyToOne
 data class AuditionApplicant(
     val phoneNumber: String,
     var voicePath: String? = null,
-    val isActive: Boolean = true
+    var isActive: Boolean = true
 ) : BaseEntity() {
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "role_id", nullable = false)
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantRepository.kt b/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantRepository.kt
index 23f88ac..c20599f 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantRepository.kt
@@ -20,6 +20,8 @@ interface AuditionApplicantQueryRepository {
         offset: Long,
         limit: Long
     ): List<GetAuditionRoleApplicantItem>
+
+    fun findActiveApplicantByMemberIdAndRoleId(memberId: Long, roleId: Long): AuditionApplicant?
 }
 
 class AuditionApplicantQueryRepositoryImpl(
@@ -90,4 +92,15 @@ class AuditionApplicantQueryRepositoryImpl(
             .orderBy(orderBy)
             .fetch()
     }
+
+    override fun findActiveApplicantByMemberIdAndRoleId(memberId: Long, roleId: Long): AuditionApplicant? {
+        return queryFactory
+            .selectFrom(auditionApplicant)
+            .where(
+                auditionApplicant.isActive.isTrue
+                    .and(auditionApplicant.member.id.eq(memberId))
+                    .and(auditionApplicant.role.id.eq(roleId))
+            )
+            .fetchFirst()
+    }
 }
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantService.kt
index d27f7ca..971bd01 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/audition/applicant/AuditionApplicantService.kt
@@ -53,6 +53,16 @@ class AuditionApplicantService(
         val auditionRole = roleRepository.findByIdOrNull(id = request.roleId)
             ?: throw SodaException("잘못된 요청입니다.\n다시 시도해 주세요.")
 
+        val existingApplicant = repository.findActiveApplicantByMemberIdAndRoleId(
+            memberId = member.id!!,
+            roleId = auditionRole.id!!
+        )
+
+        if (existingApplicant != null) {
+            existingApplicant.isActive = false
+            repository.save(existingApplicant)
+        }
+
         val applicant = AuditionApplicant(phoneNumber = request.phoneNumber)
         applicant.role = auditionRole
         applicant.member = member