diff --git a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupFacade.kt b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupFacade.kt
index f95d16c..90f74eb 100644
--- a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupFacade.kt
+++ b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupFacade.kt
@@ -79,6 +79,10 @@ class GroupFacade(
                 false -> withdrawGroupUser(group, uid, groupUser)
             }
         }
+
+        txTemplates.writer.executes {
+            groupUserScoreService.deleteAllByUid(uid)
+        }
     }
 
     private suspend fun withdrawGroupOwner(uid: Long, group: Group, groupUser: GroupUser) {
@@ -100,7 +104,7 @@ class GroupFacade(
                     groupService.saveSync(succeedGroup)
                 }
             }
-            
+
             groupUserService.delete(groupUser)
         }
     }
@@ -234,6 +238,7 @@ class GroupFacade(
         txTemplates.writer.executesOrNull {
             groupUserService.deleteSync(groupUserId)
             groupService.saveSync(group.apply { this.userCount -= 1 })
+            groupUserScoreService.deleteAllByUid(user.uid)
         }
     }
 
diff --git a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupService.kt b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupService.kt
index 214b05f..48c95de 100644
--- a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupService.kt
+++ b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupService.kt
@@ -16,6 +16,7 @@ import org.springframework.data.domain.Page
 import org.springframework.data.domain.Pageable
 import org.springframework.data.repository.findByIdOrNull
 import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
 
 @Service
 class GroupService(
@@ -66,6 +67,7 @@ class GroupService(
         groupRepository.deleteById(id)
     }
 
+    @Transactional
     fun saveSync(group: Group): Group {
         return groupRepository.save(group)
     }
diff --git a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupUserScoreService.kt b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupUserScoreService.kt
index 93478e0..cb765a1 100644
--- a/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupUserScoreService.kt
+++ b/src/main/kotlin/com/hero/alignlab/domain/group/application/GroupUserScoreService.kt
@@ -92,4 +92,9 @@ class GroupUserScoreService(
     fun deleteAllByModifiedAtBeforeSync(modifiedAt: LocalDateTime) {
         return groupUserScoreRepository.deleteAllByModifiedAtBefore(modifiedAt)
     }
+
+    @Transactional
+    fun deleteAllByUid(uid: Long) {
+        groupUserScoreRepository.deleteAllByUid(uid)
+    }
 }