diff --git a/module/report/lang/en.php b/module/report/lang/en.php
index 5123d3893a..a4681f6ee8 100644
--- a/module/report/lang/en.php
+++ b/module/report/lang/en.php
@@ -110,6 +110,8 @@ $lang->report->mailTitle->testTask = " Request (%s),";
 $lang->report->deviationDesc = 'According to the Closed Execution Deviation Rate = ((Total Cost - Total Estimate) / Total Estimate), the Deviation Rate is n/a when the Total Estimate is 0.';
 $lang->report->proVersion    = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
 $lang->report->proVersionEn  = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
+$lang->report->workloadDesc  = 'Workload = the total left hours of all tasks of the user / selected days * hours per day.
+For example: the begin and end date is January 1st to January 7th, and the total work days is 5 days, 8 hours per day. The Work load is all unfinished tasks assigned to this user to be finished in 5 days, 8 hours per day.';
 
 $lang->report->annualData = new stdclass();
 $lang->report->annualData->title            = "%s work summary in %s";
diff --git a/module/report/lang/zh-cn.php b/module/report/lang/zh-cn.php
index 428efdce3a..d843e8fdb4 100644
--- a/module/report/lang/zh-cn.php
+++ b/module/report/lang/zh-cn.php
@@ -110,6 +110,7 @@ $lang->report->mailTitle->testTask = " 测试版本(%s),";
 $lang->report->deviationDesc = '按照已关闭执行统计偏差率（偏差率 = (总消耗 - 总预计) / 总预计），总预计为0时偏差率为n/a。';
 $lang->report->proVersion    = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">更多精彩，尽在专业版！</a>';
 $lang->report->proVersionEn  = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
+$lang->report->workloadDesc  = '工作负载=用户所有任务剩余工时之和/选择的时间天数*每天的工时。例如：起止时间设为1月1日~1月7日、工作日天数5天、每天工时8h，统计的是所有指派给该人员的未完成的任务，在5天内，每天8h的情况下的工作负载。';
 
 $lang->report->annualData = new stdclass();
 $lang->report->annualData->title            = "%s %s年工作汇总";
diff --git a/module/report/view/workload.html.php b/module/report/view/workload.html.php
index df2cffe6ce..2c1038f9d2 100644
--- a/module/report/view/workload.html.php
+++ b/module/report/view/workload.html.php
@@ -62,7 +62,9 @@
     <div class='cell'>
       <div class='panel'>
         <div class="panel-heading">
-          <div class="panel-title"><?php echo $title;?></div>
+          <div class="panel-title"><?php echo $title;?>
+            <a data-toggle='tooltip' title='<?php echo $lang->report->workloadDesc;?>'><i class='icon-help'></i></a>
+          </div>
           <nav class="panel-actions btn-toolbar"></nav>
         </div>
         <div data-ride='table'>