diff --git a/app/lib/DnsHelper.php b/app/lib/DnsHelper.php
index 831b1c7..073f25d 100644
--- a/app/lib/DnsHelper.php
+++ b/app/lib/DnsHelper.php
@@ -126,6 +126,7 @@ class DnsHelper
         'huoshan' => ['DEF' => 'default', 'CT' => 'telecom', 'CU' => 'unicom', 'CM' => 'mobile', 'AB' => 'oversea'],
         'baidu' => ['DEF' => 'default', 'CT' => 'ct', 'CU' => 'cnc', 'CM' => 'cmnet', 'AB' => ''],
         'cloudflare' => ['DEF' => '0'],
+        'namesilo' => ['DEF' => '0'],
     ];
 
     public static function getList()
diff --git a/app/utils/CertDnsUtils.php b/app/utils/CertDnsUtils.php
index dd7621a..f1f951b 100644
--- a/app/utils/CertDnsUtils.php
+++ b/app/utils/CertDnsUtils.php
@@ -70,7 +70,8 @@ class CertDnsUtils
                     }
                 }
 
-                $res = $dns->addDomainRecord($row['name'], $row['type'], $row['value'], DnsHelper::$line_name[$drow['type']]['DEF'], 600);
+                $ttl = $drow['type'] == 'namesilo' ? 3600 : 600;
+                $res = $dns->addDomainRecord($row['name'], $row['type'], $row['value'], DnsHelper::$line_name[$drow['type']]['DEF'], $ttl);
                 if (!$res && $row['type'] != 'CAA') throw new Exception('添加'.$domain.'解析记录失败，' . $dns->getError());
                 $log('Add DNS Record: '.$domain.' '.$row['type'].' '.$row['value']);
             }