diff --git a/application/admin/controller/system/SystemLog.php b/application/admin/controller/system/SystemLog.php
index fef5e516..f27d4134 100644
--- a/application/admin/controller/system/SystemLog.php
+++ b/application/admin/controller/system/SystemLog.php
@@ -1 +1 @@
-<?php

namespace app\admin\controller\system;

use app\admin\controller\AuthController;
use app\admin\model\system\SystemAdmin;
use app\admin\model\system\SystemLog as LogModel;
use service\UtilService as Util;

/**
 * 管理员操作记录表控制器
 * Class SystemLog
 * @package app\admin\controller\system
 */
class SystemLog extends AuthController

{

    /**
     * 显示操作记录
     */
    public function index(){
        $where = Util::getMore([
            ['pages',''],
            ['admin_id',''],
            ['data',''],
        ],$this->request);
        $where['level'] = $this->adminInfo['level'];
        $this->assign('where',$where);
        $this->assign('admin',SystemAdmin::getOrdAdmin('id,real_name',$this->adminInfo['level']));
        $this->assign(LogModel::systemPage($where));
        return $this->fetch();
    }


}

\ No newline at end of file
+<?php

namespace app\admin\controller\system;

use app\admin\controller\AuthController;
use app\admin\model\system\SystemAdmin;
use app\admin\model\system\SystemLog as LogModel;
use service\UtilService as Util;

/**
 * 管理员操作记录表控制器
 * Class SystemLog
 * @package app\admin\controller\system
 */
class SystemLog extends AuthController

{

    /**
     * 显示操作记录
     */
    public function index(){
        LogModel::deleteLog();
        $where = Util::getMore([
            ['pages',''],
            ['admin_id',''],
            ['data',''],
        ],$this->request);
        $where['level'] = $this->adminInfo['level'];
        $this->assign('where',$where);
        $this->assign('admin',SystemAdmin::getOrdAdmin('id,real_name',$this->adminInfo['level']));
        $this->assign(LogModel::systemPage($where));
        return $this->fetch();
    }


}

\ No newline at end of file
diff --git a/application/admin/model/system/SystemLog.php b/application/admin/model/system/SystemLog.php
index 7b9d58ed..25b7a1c8 100644
--- a/application/admin/model/system/SystemLog.php
+++ b/application/admin/model/system/SystemLog.php
@@ -98,4 +98,12 @@ class SystemLog extends ModelBasic
         $model = $model->order('l.id desc');
         return self::page($model,$where);
     }
+    /**
+     * 删除超过90天的日志
+     */
+    public static function deleteLog(){
+        $model = new self;
+        $model->where('add_time','<',time()-7776000);
+        $model->delete();
+    }
 }
\ No newline at end of file