diff --git a/module/programplan/lang/de.php b/module/programplan/lang/de.php
index c5bc71e4b6..d0e0722278 100644
--- a/module/programplan/lang/de.php
+++ b/module/programplan/lang/de.php
@@ -12,6 +12,7 @@
 $lang->programplan->common        = 'Program Plan';
 $lang->programplan->browse        = 'Program Plan';
 $lang->programplan->gantt         = 'Gantt Chart';
+$lang->programplan->ganttEdit     = 'Gantt Edit';
 $lang->programplan->list          = 'Stage List';
 $lang->programplan->create        = 'Create';
 $lang->programplan->edit          = 'Edit';
diff --git a/module/programplan/lang/en.php b/module/programplan/lang/en.php
index ca205f7e10..488e8ddd13 100644
--- a/module/programplan/lang/en.php
+++ b/module/programplan/lang/en.php
@@ -12,6 +12,7 @@
 $lang->programplan->common        = 'Program Plan';
 $lang->programplan->browse        = 'Gantt Chart';
 $lang->programplan->gantt         = 'Gantt Chart';
+$lang->programplan->ganttEdit     = 'Gantt Edit';
 $lang->programplan->list          = 'Stage List';
 $lang->programplan->create        = 'Create';
 $lang->programplan->edit          = 'Edit';
diff --git a/module/programplan/lang/fr.php b/module/programplan/lang/fr.php
index c5bc71e4b6..d0e0722278 100644
--- a/module/programplan/lang/fr.php
+++ b/module/programplan/lang/fr.php
@@ -12,6 +12,7 @@
 $lang->programplan->common        = 'Program Plan';
 $lang->programplan->browse        = 'Program Plan';
 $lang->programplan->gantt         = 'Gantt Chart';
+$lang->programplan->ganttEdit     = 'Gantt Edit';
 $lang->programplan->list          = 'Stage List';
 $lang->programplan->create        = 'Create';
 $lang->programplan->edit          = 'Edit';
diff --git a/module/programplan/lang/zh-cn.php b/module/programplan/lang/zh-cn.php
index 1723c6b3cc..ff6a2b751f 100644
--- a/module/programplan/lang/zh-cn.php
+++ b/module/programplan/lang/zh-cn.php
@@ -12,6 +12,7 @@
 $lang->programplan->common        = '项目阶段';
 $lang->programplan->browse        = '浏览甘特图';
 $lang->programplan->gantt         = '甘特图';
+$lang->programplan->ganttEdit     = '甘特图编辑';
 $lang->programplan->list          = '阶段列表';
 $lang->programplan->create        = '设置阶段';
 $lang->programplan->edit          = '编辑';
@@ -84,4 +85,4 @@ $lang->programplan->error->createdTask     = '已分解任务，不可添加子
 $lang->programplan->error->parentWorkload  = '子阶段的工作量之和不能大于父阶段的工作量:%s';
 $lang->programplan->error->parentDuration  = '子阶段计划开始、计划完成不能超过父阶段';
 $lang->programplan->error->sameName        = '阶段名称不能相同！';
-$lang->programplan->error->taskDrag        = '%s的任务不可以拖动';
\ No newline at end of file
+$lang->programplan->error->taskDrag        = '%s的任务不可以拖动';
diff --git a/module/programplan/view/gantt.html.php b/module/programplan/view/gantt.html.php
index 399db34bff..9f8b5a5d3f 100644
--- a/module/programplan/view/gantt.html.php
+++ b/module/programplan/view/gantt.html.php
@@ -69,6 +69,7 @@ form {display: block; margin-top: 0em; margin-block-end: 1em;}
 <?php js::set('dateDetails', $dateDetails);?>
 <?php js::set('module', $app->rawModule);?>
 <?php js::set('method', $app->rawMethod);?>
+<?php js::set('canGanttEdit', common::hasPriv('programplan', 'ganttEdit'));?>
 <div id='mainContent' class='main-content load-indicator' data-loading='<?php echo $lang->programplan->exporting;?>'>
   <form class="main-form form-ajax not-watch">
     <div class="example">
@@ -456,7 +457,7 @@ $(function()
     ?>
     gantt.serverList("userList", <?php echo json_encode($userList);?>);
 
-    gantt.config.readonly            = false;
+    gantt.config.readonly            = canGanttEdit ? true : false;
     gantt.config.details_on_dblclick = false;
     gantt.config.order_branch        = 'marker';
     gantt.config.details_on_dblclick = false;