diff --git a/module/programplan/control.php b/module/programplan/control.php
index c57644f0b0..1d11bb6cf9 100644
--- a/module/programplan/control.php
+++ b/module/programplan/control.php
@@ -252,6 +252,7 @@ class programplan extends control
         $this->view->plan               = $plan;
         $this->view->parentStageList    = $this->programplan->getParentStageList($this->session->project, $planID, $plan->product);
         $this->view->enableOptionalAttr = (empty($parentStage) or (!empty($parentStage) and $parentStage->attribute == 'mix'));
+        $this->view->isTopStage         = $this->programplan->checkTopStage($planID);
 
         $this->display();
     }
diff --git a/module/programplan/js/edit.js b/module/programplan/js/edit.js
index 2a527ca7ea..0eb9d72561 100644
--- a/module/programplan/js/edit.js
+++ b/module/programplan/js/edit.js
@@ -27,7 +27,7 @@ $(function()
         changeParentStage(parent);
     });
 
-    $('#submit').click(function(event)
+    $('#submit').click(function()
     {
         if(plan.parent != $('#parent').val() && $('#parent').val() != 0)
         {
@@ -45,5 +45,16 @@ $(function()
 
             if(!result) return false;
         }
+
+        var currentAttribute    = $('#attribute').val();
+        var currentParent       = $('#parent').val();
+        var hasChangedAttribute = (currentAttribute && currentAttribute != 'mix' && plan.attribute != currentAttribute);
+        var hasChangedParent    = ((isTopStage && $('#parent').val() != 0) || (!isTopStage && plan.parent != $('#parent').val()));
+        if(hasChangedAttribute && !hasChangedParent)
+        {
+            var result = confirm(changeAttrLang.replace('%s', stageTypeList[currentAttribute]));
+
+            if(!result) return false;
+        }
     })
 })
diff --git a/module/programplan/model.php b/module/programplan/model.php
index aeb5ba9f7b..eb3e863f00 100755
--- a/module/programplan/model.php
+++ b/module/programplan/model.php
@@ -1498,6 +1498,21 @@ class programplanModel extends model
         return $subStageList ? false : true;
     }
 
+    /**
+     * Change whether it is the top stage.
+     *
+     * @param  int    $planID
+     * @access public
+     * @return bool
+     */
+    public function checkTopStage($planID)
+    {
+        $parentID   = $this->dao->select('parent')->from(TABLE_EXECUTION)->where('id')->eq($planID)->fetch('parent');
+        $parentType = $this->dao->select('type')->from(TABLE_EXECUTION)->where('id')->eq($parentID)->fetch('type');
+
+        return $parentType == 'project';
+    }
+
     /**
      * Update sub-stage attribute.
      *
diff --git a/module/programplan/view/edit.html.php b/module/programplan/view/edit.html.php
index c2f7c23ac4..72b42e3340 100644
--- a/module/programplan/view/edit.html.php
+++ b/module/programplan/view/edit.html.php
@@ -15,6 +15,7 @@
 <?php js::set('plan', $plan);?>
 <?php js::set('stageTypeList', $lang->stage->typeList);?>
 <?php js::set('changeAttrLang', $lang->programplan->confirmChangeAttr);?>
+<?php js::set('isTopStage', $isTopStage);?>
 <div id="mainContent" class="main-content fade">
   <div class="center-block">
     <div class="main-header">