diff --git a/backend/app/service/FeishuNotificationService.php b/backend/app/service/FeishuNotificationService.php
index 6c1b624..9bfb0c9 100644
--- a/backend/app/service/FeishuNotificationService.php
+++ b/backend/app/service/FeishuNotificationService.php
@@ -145,7 +145,9 @@ class FeishuNotificationService
 
             // 检查是否是申请人自己 - 发送文本消息而不是卡片
             $applicantId = $params['applicant_id'] ?? null;
-            if ($applicantId && $applicantId == $userId) {
+            error_log("🔍 自审批检查: applicant_id=" . ($applicantId ?? 'null') . ", user_id={$userId}, match=" . (($applicantId == $userId) ? 'true' : 'false'));
+
+            if ($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);
             }