diff --git a/server/app/common.php b/server/app/common.php
index c169644f04cb1d57440e4ea1ea89da335778556b..333df8e4935ee0c96b073d58cfd696ae31faa7b5 100644
--- a/server/app/common.php
+++ b/server/app/common.php
@@ -207,14 +207,13 @@ function clear_file_domain($content)
  * @author 段誉
  * @date 2024/2/5 16:36
  */
-function get_file_domain($content)
+ function get_file_domain($content)
 {
     $fileUrl = FileService::getFileUrl();
     $imgPreg = '/(<img .*?src=")(?!https?:\/\/)([^"]*)(".*?>)/is';
-    $videoPreg = '/(<video .*?src=")(?!https?:\/\/)([^"]*)(".*?>)/is';
-    $content = preg_replace($imgPreg, "\${1}$fileUrl\${2}\${3}", $content);
-    $content = preg_replace($videoPreg, "\${1}$fileUrl\${2}\${3}", $content);
-    return $content;
+    $videoPreg = '/(<video .*?src=")(?!https?:\/\/)([^"]*\.mp4)(".*?>)/is';
+    $content = preg_replace($imgPreg, "\${1}{$fileUrl}\${2}\${3}", $content);
+    return preg_replace($videoPreg, "\${1}{$fileUrl}\${2}\${3}", $content);
 }
 
 /**