diff --git a/api/v1/entries/todoactivate.php b/api/v1/entries/todoactivate.php
new file mode 100644
index 0000000000..fe26a2ef2a
--- /dev/null
+++ b/api/v1/entries/todoactivate.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * The todo activate entry point of ZenTaoPMS.
+ *
+ * @copyright   Copyright 2009-2021 青岛易软天创网络科技有限公司(QingDao Nature Easy Soft Network Technology Co,LTD, www.cnezsoft.com)
+ * @license     ZPL (http://zpl.pub/page/zplv12.html)
+ * @author      Chunsheng Wang <chunsheng@cnezsoft.com>
+ * @package     entries
+ * @version     1
+ * @link        http://www.zentao.net
+ */
+class todoActivateEntry extends Entry
+{
+    /**
+     * GET method.
+     *
+     * @param  int    $taskID
+     * @access public
+     * @return void
+     */
+    public function get($todoID)
+    {
+        $control = $this->loadController('todo', 'activate');
+        $control->activate($todoID);
+
+        $data = $this->getData();
+        if($data->status == 'fail') return $this->sendError(400, $data->message);
+
+        $todo = $this->loadModel('todo')->getByID($todoID);
+        $this->send(200, $this->format($todo, 'assignedDate:time,finishedDate:time,closedDate:time'));
+    }
+}
diff --git a/config/routes.php b/config/routes.php
index 4adf44290a..53e4fec658 100644
--- a/config/routes.php
+++ b/config/routes.php
@@ -63,9 +63,10 @@ $routes['/projects/:projectID/issues'] = 'issues';
 $routes['/issues']                     = 'issues';
 $routes['/issues/:issueID']            = 'issue';
 
-$routes['/todos']            = 'todos';
-$routes['/todos/:id']        = 'todo';
-$routes['/todos/:id/finish'] = 'todoFinish';
+$routes['/todos']              = 'todos';
+$routes['/todos/:id']          = 'todo';
+$routes['/todos/:id/finish']   = 'todoFinish';
+$routes['/todos/:id/activate'] = 'todoActivate';
 
 $routes['/projects/:projectID/builds'] = 'builds';
 $routes['/builds']                     = 'builds';
diff --git a/module/todo/control.php b/module/todo/control.php
index 5b207f0671..d8dcb8f1c3 100644
--- a/module/todo/control.php
+++ b/module/todo/control.php
@@ -312,6 +312,7 @@ class todo extends control
     {
         $todo = $this->todo->getById($todoID);
         if($todo->status == 'done' or $todo->status == 'closed') $this->todo->activate($todoID);
+        if(defined('RUN_MODE') && RUN_MODE == 'api') return $this->send(array('status' => 'success'));
         if(isonlybody()) die(js::reload('parent.parent'));
         die(js::reload('parent'));
     }