diff --git a/app/adminapi/logic/project/ProjectManagerAppointmentLogic.php b/app/adminapi/logic/project/ProjectManagerAppointmentLogic.php
index 673586ffd..bf7c23e50 100644
--- a/app/adminapi/logic/project/ProjectManagerAppointmentLogic.php
+++ b/app/adminapi/logic/project/ProjectManagerAppointmentLogic.php
@@ -109,8 +109,8 @@ class ProjectManagerAppointmentLogic extends BaseLogic
                 'project_manager' => $params['project_manager'],
                 'amount' => $params['amount'],
                 'project_approval_date' => strtotime($params['project_approval_date']),
-                'start_date' => $params['start_date'],
-                'delivery_date' => $params['delivery_date'],
+                'start_date' => strtotime($params['start_date']),
+                'delivery_date' => strtotime($params['delivery_date']),
                 'remark' => $params['remark'],
                 'annex' => !empty($params['annex']) ? $params['annex'] : null,
             ]);