diff --git a/backend/app/service/FeishuNotificationService.php b/backend/app/service/FeishuNotificationService.php
index 9bfb0c9..02e9a80 100644
--- a/backend/app/service/FeishuNotificationService.php
+++ b/backend/app/service/FeishuNotificationService.php
@@ -124,6 +124,10 @@ class FeishuNotificationService
     public function sendApprovalNotification(array $params): bool
     {
         $userId = $params['user_id'] ?? null;
+        $applicantId = $params['applicant_id'] ?? null;
+
+        error_log("📧 sendApprovalNotification 被调用: user_id={$userId}, applicant_id=" . ($applicantId ?? 'null'));
+
         if (!$userId) {
             error_log('❌ sendApprovalNotification: 缺少 user_id');
             return false;
@@ -144,14 +148,14 @@ class FeishuNotificationService
             }
 
             // 检查是否是申请人自己 - 发送文本消息而不是卡片
-            $applicantId = $params['applicant_id'] ?? null;
-            error_log("🔍 自审批检查: applicant_id=" . ($applicantId ?? 'null') . ", user_id={$userId}, match=" . (($applicantId == $userId) ? 'true' : 'false'));
+            error_log("🔍 自审批检查前: applicant_id=" . var_export($applicantId, true) . ", user_id=" . var_export($userId, true));
 
             if ($applicantId && (int)$applicantId === (int)$userId) {
                 error_log("🔄 检测到自审批，发送文本通知而不是卡片");
                 return $this->sendTextNotification($feishuUserId, $params);
             }
 
+            error_log("📨 发送卡片消息: 不是自审批");
             $card = $this->buildApprovalCard($params, $user->company_id);
             return $this->sendMessage($feishuUserId, $card);
         } catch (Exception $e) {
@@ -342,7 +346,7 @@ class FeishuNotificationService
                 'size' => 'medium',
                 'value' => [
                     'action_type' => 'approve',
-                    'order_id' => $orderId,
+                    'order_id' => (int)$orderId,
                 ],
             ];
 
@@ -357,7 +361,7 @@ class FeishuNotificationService
                 'size' => 'medium',
                 'value' => [
                     'action_type' => 'reject',
-                    'order_id' => $orderId,
+                    'order_id' => (int)$orderId,
                 ],
             ];
         }