diff --git a/.example.env b/.example.env
index c8e304f..b14df79 100644
--- a/.example.env
+++ b/.example.env
@@ -21,6 +21,10 @@ FIELDS_CACHE=false
 [LOG]
 CHANNEL=file
 
+[TIMER]
+# 清理日志保留天数（debug_log 表）
+CLEAR_LOG_DAYS=3
+
 [LANG]
 default_lang=zh-cn
 
diff --git a/config/timer.php b/config/timer.php
index 0d451c2..302f4b4 100644
--- a/config/timer.php
+++ b/config/timer.php
@@ -1,5 +1,7 @@
 <?php
 
+use think\facade\Env;
+
 // 配置参考：https://doc.ulthon.com/read/augushong/ulthon_admin/timer-mode/zh-cn/2.x.html
 $config = [
     'mode' => 'normal',
@@ -9,6 +11,9 @@ $config = [
     'keepalive_timeout' => 86400,  // 连接多长时间不通讯就关闭
     'connect_timeout'   => 86400,  // 连接超时时间
     'timeout'           => 86400,  // 请求发出后等待响应的超时时间
+
+    // 清理日志保留天数（debug_log 表）
+    'clear_log_days' => Env::get('timer.clear_log_days', 3),
 ];
 
 return $config;
diff --git a/extend/base/tools/controller/timer/ClearLogBase.php b/extend/base/tools/controller/timer/ClearLogBase.php
index 50846b6..a8ec744 100644
--- a/extend/base/tools/controller/timer/ClearLogBase.php
+++ b/extend/base/tools/controller/timer/ClearLogBase.php
@@ -14,8 +14,9 @@ class ClearLogBase extends TimerController
 
     public function do()
     {
-        Log::debug('清除3天的日志');
-        Db::name('debug_log')->where('create_time', '<', time() - 60 * 60 * 24 * 3)->delete();
+        $days = (int) config('timer.clear_log_days', 3);
+        Log::debug('清除' . $days . '天的日志');
+        Db::name('debug_log')->where('create_time', '<', time() - 60 * 60 * 24 * $days)->delete();
 
         return 'success';
     }