diff --git a/service/modules/v1/controllers/PrescripDetailController.php b/service/modules/v1/controllers/PrescripDetailController.php
index dc9c235..ce5662f 100644
--- a/service/modules/v1/controllers/PrescripDetailController.php
+++ b/service/modules/v1/controllers/PrescripDetailController.php
@@ -43,7 +43,7 @@ class PrescripDetailController extends BaseAppController
             ]
         ];
 
-        $patient_name = $post['patient_name'];
+        $patient_name = $post['patient_name']?? '';
         $query->joinWith(['userPatient' => function ($q) use ($patient_name) {
             $q->alias('up');
             //搜索就诊人姓名