diff --git a/wmyun-module-infra/wmyun-module-infra-biz/src/main/java/com/wmyun/module/infra/service/file/FilePreviewServiceImpl.java b/wmyun-module-infra/wmyun-module-infra-biz/src/main/java/com/wmyun/module/infra/service/file/FilePreviewServiceImpl.java
index a76fb7b..4ddae0b 100644
--- a/wmyun-module-infra/wmyun-module-infra-biz/src/main/java/com/wmyun/module/infra/service/file/FilePreviewServiceImpl.java
+++ b/wmyun-module-infra/wmyun-module-infra-biz/src/main/java/com/wmyun/module/infra/service/file/FilePreviewServiceImpl.java
@@ -107,9 +107,10 @@ public class FilePreviewServiceImpl implements FilePreviewService {
      */
     private String replaceWithSelfAddress(String url, String targetIP) {
         // 正则匹配 http(s):// 后的 IPv4 地址
-        Pattern pattern = Pattern.compile("(https?://)(\\d+\\.\\d+\\.\\d+\\.\\d+)");
+        Pattern pattern = Pattern.compile("https?://\\d+\\.\\d+\\.\\d+\\.\\d+");
         Matcher matcher = pattern.matcher(url);
-        return matcher.replaceAll("$1" + targetIP);
+        // 替换为新的协议和 IP 地址
+        return matcher.replaceAll(targetIP);
     }
 
     @Override