diff --git a/code/rest/task_service.go b/code/rest/task_service.go
index e9ca22d..da614b1 100644
--- a/code/rest/task_service.go
+++ b/code/rest/task_service.go
@@ -132,8 +132,7 @@ func (this *TaskService) doScanTask() {
 
 				this.logger.Info("scan spaceName = %s", space.Name)
 
-				//find admin as operator.
-				// adminUser := this.userDao.FindAnAdmin()
+				//find user by space
 				user := this.userDao.FindByUuid(space.UserUuid)
 				this.matterService.DeleteByPhysics(request, user, space)
 				this.matterService.ScanPhysics(request, user, space)
@@ -143,9 +142,6 @@ func (this *TaskService) doScanTask() {
 		})
 
 	} else if scanConfig.Scope == SCAN_SCOPE_CUSTOM {
-		//scan custom user's folder.
-		//find admin as operator.
-		adminUser := this.userDao.FindAnAdmin()
 
 		for _, spaceName := range scanConfig.SpaceNames {
 			space := this.spaceDao.FindByName(spaceName)
@@ -155,9 +151,10 @@ func (this *TaskService) doScanTask() {
 				this.logger.Info("scan custom user folder. spaceName = %s", spaceName)
 
 				core.RunWithRecovery(func() {
-
-					this.matterService.DeleteByPhysics(request, adminUser, space)
-					this.matterService.ScanPhysics(request, adminUser, space)
+					//find user by space
+					user := this.userDao.FindByUuid(space.UserUuid)
+					this.matterService.DeleteByPhysics(request, user, space)
+					this.matterService.ScanPhysics(request, user, space)
 
 				})