diff --git a/application/index/controller/Admin.php b/application/index/controller/Admin.php
index 0d55d851..42772db4 100644
--- a/application/index/controller/Admin.php
+++ b/application/index/controller/Admin.php
@@ -33,9 +33,15 @@ class Admin extends Controller{
 			$this->redirect(url('/Admin/UpdateDb','',''));
 			exit();
 		}
+		if($this->adminObj->checkCron()){
+			$isCronOk = true;
+		}else{
+			$isCronOk = false;
+		}
 		return view('admin_index', [
 			'options'  => $this->siteOptions,
 			'statics' => $this->adminObj->getStatics(),
+			'isCronOk' => $isCronOk,
 		]);
 	}
 
diff --git a/application/index/model/AdminHandler.php b/application/index/model/AdminHandler.php
index b71e934d..e26885ba 100644
--- a/application/index/model/AdminHandler.php
+++ b/application/index/model/AdminHandler.php
@@ -31,6 +31,14 @@ class AdminHandler extends Model{
 		return false;
 	}
 
+	public function checkCron(){
+		$cronRecord = Db::name("corn")->where("name","delete_unseful_chunks")->find();
+		if($cronRecord["last_excute"]+$cronRecord["interval_s"]+"1800"<time()){
+			return false;
+		}
+		return true;
+	}
+
 	public function getStatics(){
 		$statics["fileNum"] = Db::name('files')->count();
 		$statics["privateShareNum"] = Db::name('shares')->where("type","private")->count();
diff --git a/application/index/view/admin/admin_index.html b/application/index/view/admin/admin_index.html
index d14ba5d5..fc702e7e 100644
--- a/application/index/view/admin/admin_index.html
+++ b/application/index/view/admin/admin_index.html
@@ -11,7 +11,14 @@
         <li class="breadcrumb-item active">数据概况</li>
       </ol>
       <!-- Icon Cards-->
+      {eq name="isCronOk" value="true"}
+        {else/}
+        <div class="alert alert-danger" role="alert">
+            <strong>警告！Cron定时任务疑似未执行</strong><p>检测到<a href="/Admin/Cron">定时任务</a>未正常执行，请检查您的定时任务配置。您可以通过Crontab或者其他网站监控服务，让 “您的域名/Cron” 此地址每隔一段时间被访问一次。</p>
+          </div>
+        {/eq}
       <div class="row">
+        
         <div class="col-xl-3 col-sm-6 mb-3">
           <div class="card text-white bg-primary o-hidden h-100">
             <div class="card-body">
diff --git a/mysql.sql b/mysql.sql
index 9cf08f97..0189e35a 100644
--- a/mysql.sql
+++ b/mysql.sql
@@ -73,7 +73,7 @@ INSERT INTO `sd_corn` (`id`, `rank`, `name`, `des`, `last_excute`, `interval_s`,
 (1, 2, 'delete_unseful_chunks', '删除分片上传产生的失效文件块', 0, 3600, 1),
 (2, 1, 'delete_callback_data', '删除callback记录', 0, 86400, 1),
 (3, 1, 'flush_aria2', '刷新离线下载状态', 0, 30, 1),
-(4, 3, 'flush_onedrive_token', '刷新Onedrive Token', 1536821807, 3000, 1);
+(4, 3, 'flush_onedrive_token', '刷新Onedrive Token', 0, 3000, 1);
 -- --------------------------------------------------------
 
 --