diff --git a/backend/app/service/BusinessTripService.php b/backend/app/service/BusinessTripService.php
index e5b260f..6cb13b5 100644
--- a/backend/app/service/BusinessTripService.php
+++ b/backend/app/service/BusinessTripService.php
@@ -684,8 +684,10 @@ class BusinessTripService
     {
         error_log("📝 approve() 开始: userId={$userId}, businessTripId={$businessTripId}, action={$action}");
 
-        return $this->db->transaction(function () use ($userId, $businessTripId, $action, $comment) {
-            $businessTrip = BusinessTrip::with(['itineraries', 'approvalOrder'])->findOrFail($businessTripId);
+        try {
+            $result = $this->db->transaction(function () use ($userId, $businessTripId, $action, $comment) {
+                error_log("🔄 Transaction 开始");
+                $businessTrip = BusinessTrip::with(['itineraries', 'approvalOrder'])->findOrFail($businessTripId);
 
             if (!$businessTrip->approval_order_id) {
                 throw new \Exception('未找到审批单');
@@ -824,14 +826,27 @@ class BusinessTripService
                 }
             }
 
+            error_log("💾 准备保存: order_status={$approvalOrder->status}, trip_status={$businessTrip->status}");
+
             $approvalOrder->save();
             $businessTrip->save();
 
+            error_log("✅ 保存完成: order_id={$approvalOrder->id}, trip_id={$businessTrip->id}");
+
             // 发送审批结果通知
             $this->sendApprovalResultNotification($businessTrip, $action, $comment);
 
+            error_log("✅ Transaction 成功，返回结果");
+
             return $businessTrip->fresh(['itineraries', 'approvalOrder']);
-        });
+            });
+
+            error_log("📝 approve() 完成: result_id=" . $result->id);
+            return $result;
+        } catch (\Exception $e) {
+            error_log("❌ approve() 异常: " . $e->getMessage() . " in " . $e->getFile() . ":" . $e->getLine());
+            throw $e;
+        }
     }
 
     /**