diff --git a/src/main/kotlin/com/example/onui/domain/mission/entity/Mission.kt b/src/main/kotlin/com/example/onui/domain/mission/entity/Mission.kt
index bc76092..1c8d824 100644
--- a/src/main/kotlin/com/example/onui/domain/mission/entity/Mission.kt
+++ b/src/main/kotlin/com/example/onui/domain/mission/entity/Mission.kt
@@ -26,7 +26,7 @@ class Mission(
     var goal: String = goal
         protected set
 
-    @Column(name = "message", nullable = false, unique = true)
+    @Column(name = "message", nullable = false)
     var message: String = message
         protected set
 
diff --git a/src/main/kotlin/com/example/onui/domain/mission/repository/MissionRepository.kt b/src/main/kotlin/com/example/onui/domain/mission/repository/MissionRepository.kt
index 095797c..ed4b2b6 100644
--- a/src/main/kotlin/com/example/onui/domain/mission/repository/MissionRepository.kt
+++ b/src/main/kotlin/com/example/onui/domain/mission/repository/MissionRepository.kt
@@ -9,7 +9,5 @@ import java.util.*
 @Repository
 interface MissionRepository : JpaRepository<Mission, UUID?> {
 
-    fun existsByMessage(message: String): Boolean
-
     fun findAllByMissionType(missionType: MissionType): MutableList<Mission>
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/example/onui/domain/mission/service/MissionServiceImpl.kt b/src/main/kotlin/com/example/onui/domain/mission/service/MissionServiceImpl.kt
index 3d0fd80..780b9b7 100644
--- a/src/main/kotlin/com/example/onui/domain/mission/service/MissionServiceImpl.kt
+++ b/src/main/kotlin/com/example/onui/domain/mission/service/MissionServiceImpl.kt
@@ -3,7 +3,6 @@
 import com.example.onui.domain.mission.entity.AssignMission
 import com.example.onui.domain.mission.entity.Mission
 import com.example.onui.domain.mission.entity.MissionType
-import com.example.onui.domain.mission.exception.AlreadyCreatedMissionException
 import com.example.onui.domain.mission.exception.TypeCoastMissMatchedMissionException
 import com.example.onui.domain.mission.presentation.dto.request.CreateMissionRequest
 import com.example.onui.domain.mission.presentation.dto.response.MissionListResponse
@@ -30,13 +29,12 @@ class MissionServiceImpl(
         userFacade.getAdmin()
 
         if (req.missionType!! == MissionType.ASSIGN && req.coast == null) throw TypeCoastMissMatchedMissionException
-        if (missionRepository.existsByMessage(req.message!!)) throw AlreadyCreatedMissionException
 
         val mission = missionRepository.save(
             Mission(
                 req.name!!,
                 req.goal!!,
-                req.message,
+                req.message!!,
                 req.missionType
             )
         )