diff --git a/backend/app/service/FeishuNotificationService.php b/backend/app/service/FeishuNotificationService.php
index 4d3a6bb..b016316 100644
--- a/backend/app/service/FeishuNotificationService.php
+++ b/backend/app/service/FeishuNotificationService.php
@@ -677,10 +677,19 @@ class FeishuNotificationService
                 return true;
             }
 
-            // 获取订单以确定公司ID，设置飞书应用配置
+            // 获取订单申请人信息，从用户中获取公司ID
             $order = \app\model\ApprovalOrder::find($orderId);
-            if ($order && $order->company_id) {
-                $this->setAppByUser($excludeUserId, $order->company_id);
+            $companyId = null;
+            if ($order) {
+                $applicant = \app\model\User::find($order->applicant_id);
+                if ($applicant && !empty($applicant->company_id)) {
+                    $companyId = $applicant->company_id;
+                }
+            }
+
+            // 如果获取到公司ID，设置飞书应用配置
+            if ($companyId) {
+                $this->setAppByUser($excludeUserId, $companyId);
             }
 
             $token = $this->getAccessToken();
@@ -822,10 +831,19 @@ class FeishuNotificationService
                 return true;
             }
 
-            // 获取订单以确定公司ID，设置飞书应用配置
+            // 获取订单申请人信息，从用户中获取公司ID
             $order = \app\model\ApprovalOrder::find($orderId);
-            if ($order && $order->company_id) {
-                $this->setAppByUser($excludeUserId, $order->company_id);
+            $companyId = null;
+            if ($order) {
+                $applicant = \app\model\User::find($order->applicant_id);
+                if ($applicant && !empty($applicant->company_id)) {
+                    $companyId = $applicant->company_id;
+                }
+            }
+
+            // 如果获取到公司ID，设置飞书应用配置
+            if ($companyId) {
+                $this->setAppByUser($excludeUserId, $companyId);
             }
 
             $token = $this->getAccessToken();