diff --git a/module/metric/calc/task/rate/rate_of_hour_process_task.php b/module/metric/calc/task/rate/rate_of_hour_process_task.php
new file mode 100644
index 0000000000..580d749257
--- /dev/null
+++ b/module/metric/calc/task/rate/rate_of_hour_process_task.php
@@ -0,0 +1,46 @@
+<?php
+/**
+ * 按系统统计的任务进度。
+ * Rate of task process.
+ *
+ * 范围：system
+ * 对象：task
+ * 目的：rate
+ * 度量名称：按系统统计的任务进度
+ * 单位：%
+ * 描述：按系统统计的任务进度是指已消耗工时占相对于已消耗工时数+剩余工时数的比例。
+ * 定义：按系统统计的已消耗工时数;按系统统计的剩余工时数;公式：已消耗工时数÷（已消耗工时数+剩余工时数）;
+ *
+ * @copyright Copyright 2009-2025 禅道软件（青岛）有限公司(ZenTao Software (Qingdao) Co., Ltd. www.zentao.net)
+ * @author    Yanyi Cao <caoyanyi@chandao.com>
+ * @package
+ * @uses      func
+ * @license   ZPL(https://zpl.pub/page/zplv12.html) or AGPL(https://www.gnu.org/licenses/agpl-3.0.en.html)
+ * @Link      https://www.zentao.net
+ */
+class rate_of_hour_process_task extends baseCalc
+{
+    public $dataset = '';
+
+    public $fieldList = array();
+
+    public $result = array('consumed' => 0, 'left' => 0);
+
+    public function calculate($row)
+    {
+        if($row->isParent) return;
+
+        $this->result['consumed'] += $row->consumed;
+        $this->result['left']     += $row->left;
+    }
+
+    public function getResult($options = array())
+    {
+        $consumed = $this->result['consumed'];
+        $left     = $this->result['left'];
+        $rate     = $consumed || $left ? round($consumed / ($consumed + $left), 4) : 0;
+
+        $records = array(array('value' => $rate));
+        return $this->filterByOptions($records, $options);
+    }
+}