diff --git a/app/common/service/WordpressSiteService.php b/app/common/service/WordpressSiteService.php
index 89a2861..dee006f 100644
--- a/app/common/service/WordpressSiteService.php
+++ b/app/common/service/WordpressSiteService.php
@@ -999,6 +999,105 @@ class WordpressSiteService
         }
     }
 
+    /**
+     * 上传文件（PDF等附件）到 WordPress 媒体库
+     *
+     * @param string $domain
+     * @param string $api_user
+     * @param string $api_secret
+     * @param string $fileUrl 文件URL
+     * @return array
+     * @throws \Exception
+     */
+    public function uploadFileToWp(string $domain, string $api_user, string $api_secret, string $fileUrl): array
+    {
+        // 使用 OssService 生成完整的文件URL
+        $ossUrl = (new OssService)->generatePrivateUrl($fileUrl, 3600);
+
+        $client = new Client();
+
+        // 从原始 URL 提取文件扩展名
+        $pathInfo = pathinfo(parse_url($fileUrl, PHP_URL_PATH));
+        $extension = strtolower($pathInfo['extension'] ?? 'pdf');
+        $filename = ($pathInfo['filename'] ?? 'file') . '.' . $extension;
+
+        // 确定Content-Type
+        $mimeTypes = [
+            'pdf' => 'application/pdf',
+            'doc' => 'application/msword',
+            'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+            'xls' => 'application/vnd.ms-excel',
+            'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            'zip' => 'application/zip',
+            'rar' => 'application/x-rar-compressed',
+        ];
+        $contentType = $mimeTypes[$extension] ?? 'application/octet-stream';
+
+        $mediaUrl = $domain . '/wp-json/wp/v2/media';
+
+        // 本地临时文件路径
+        $tempDir = runtime_path('temp') . '/wp_files/';
+        if (!is_dir($tempDir)) {
+            mkdir($tempDir, 0755, true);
+        }
+        $tempFilePath = $tempDir . md5($fileUrl) . '.' . $extension;
+
+        try {
+            // 1. 下载文件到本地临时文件
+            $fileContent = file_get_contents($ossUrl);
+            if ($fileContent === false) {
+                throw new \Exception('文件下载失败：' . $ossUrl);
+            }
+
+            // 写入临时文件
+            $bytesWritten = file_put_contents($tempFilePath, $fileContent);
+            if ($bytesWritten === false) {
+                throw new \Exception('写入临时文件失败：' . $tempFilePath);
+            }
+
+            // 2. 使用 GuzzleHttp 上传本地文件到 WP 媒体库
+            $fileHandle = fopen($tempFilePath, 'r');
+
+            $multipart = [
+                [
+                    'name' => 'file',
+                    'filename' => $filename,
+                    'contents' => $fileHandle,
+                    'headers' => [
+                        'Content-Type' => $contentType,
+                    ],
+                ],
+            ];
+
+            $response = $client->post($mediaUrl, [
+                RequestOptions::AUTH => [$api_user, $api_secret],
+                RequestOptions::MULTIPART => $multipart,
+                RequestOptions::VERIFY => false,
+                RequestOptions::TIMEOUT => 60,
+            ]);
+
+            // 关闭文件句柄
+            if (is_resource($fileHandle)) {
+                fclose($fileHandle);
+            }
+
+            $result = json_decode($response->getBody()->getContents(), true);
+            return $result;
+
+        } catch (\Exception $e) {
+            Log::error('上传文件到WordPress失败', [
+                'file_url' => $fileUrl,
+                'error' => $e->getMessage(),
+            ]);
+            throw new \Exception('上传文件失败：' . $e->getMessage());
+        } finally {
+            // 3. 删除临时文件
+            if (file_exists($tempFilePath)) {
+                @unlink($tempFilePath);
+            }
+        }
+    }
+
     /**
      * 创建产品到新站点（使用 Gutenberg Blocks 结构）
      *
@@ -1116,6 +1215,27 @@ class WordpressSiteService
             $data['pa_brand'] = [$brandId];
         }
 
+        // 处理附件：上传第一个附件到WordPress，使用ACF字段存储
+        if (!empty($car->attachment)) {
+            $attachments = json_decode($car->attachment, true);
+            if (is_array($attachments) && count($attachments) > 0) {
+                $firstAttachment = $attachments[0];
+                $attachmentSrc = $firstAttachment['src'] ?? '';
+                if (!empty($attachmentSrc)) {
+                    try {
+                        $uploadedFile = $this->uploadFileToWp($domain, $site->api_user, $site->api_secret, $attachmentSrc);
+                        // ACF attachment字段直接存储媒体ID
+                        $data['acf']['attachment'] = $uploadedFile['id'];
+                    } catch (\Exception $e) {
+                        Log::error('附件上传失败', [
+                            'attachment_src' => $attachmentSrc,
+                            'error' => $e->getMessage(),
+                        ]);
+                    }
+                }
+            }
+        }
+
         // 设置主图和车辆相册（ACF字段）
         if (!empty($uploadedImages)) {
             $allImageIds = array_map(function($img) {