diff --git a/member/models/forms/RegisterForm.php b/member/models/forms/RegisterForm.php
index 6279d5a..dffe56b 100644
--- a/member/models/forms/RegisterForm.php
+++ b/member/models/forms/RegisterForm.php
@@ -11,6 +11,7 @@ use common\helpers\FuncHelper;
 use common\models\oldDb\DoctorPatient;
 use common\models\oldDb\Register;
 use common\models\oldDb\ServiceUser;
+use common\models\oldDb\Store;
 use common\models\oldDb\StoreDoctor;
 use common\models\oldDb\UserPatient;
 use common\modelsgii\oldDb\PayConfig;
@@ -116,9 +117,19 @@ class RegisterForm extends BaseModel
 
         $t = \Yii::$app->db->beginTransaction();
         try {
+            // 确定实际使用的门店ID
+            // 如果是购药（register_type=3）且当前门店（药店）配置了委托诊所，则使用委托诊所ID
+            $actualStoreId = \Yii::$app->store;
+            if ($this->register_type == 3) {
+                $currentStore = Store::findOne($actualStoreId);
+                if ($currentStore && !empty($currentStore->delegate_store_id)) {
+                    $actualStoreId = $currentStore->delegate_store_id;
+                }
+            }
+
             $UserRegister = new Register();
             $UserRegister->user_id = \Yii::$app->user->id;
-            $UserRegister->store_id = \Yii::$app->store;
+            $UserRegister->store_id = $actualStoreId;
             $UserRegister->order_no = FuncHelper::generate_order_no('SN');
             $UserRegister->user_patient_id = $this->user_patient_id;
             $UserRegister->service_user_id = $this->service_user_id;