diff --git a/module/execution/control.php b/module/execution/control.php
index 3b71572c4a..ce1878dc64 100644
--- a/module/execution/control.php
+++ b/module/execution/control.php
@@ -795,27 +795,28 @@ class execution extends control
         $modulePairs = $showModule ? $this->tree->getModulePairs($type == 'byproduct' ? $param : 0, 'story', $showModule) : array();
 
         /* Assign. */
-        $this->view->title        = $title;
-        $this->view->position     = $position;
-        $this->view->productID    = $productID;
-        $this->view->execution    = $execution;
-        $this->view->stories      = $stories;
-        $this->view->allPlans     = $allPlans;
-        $this->view->summary      = $this->product->summary($stories);
-        $this->view->orderBy      = $orderBy;
-        $this->view->type         = $this->session->executionStoryBrowseType;
-        $this->view->param        = $param;
-        $this->view->moduleTree   = $this->loadModel('tree')->getProjectStoryTreeMenu($executionID, $startModuleID = 0, array('treeModel', 'createStoryLink'));
-        $this->view->modulePairs  = $modulePairs;
-        $this->view->tabID        = 'story';
-        $this->view->storyTasks   = $storyTasks;
-        $this->view->storyBugs    = $storyBugs;
-        $this->view->storyCases   = $storyCases;
-        $this->view->users        = $users;
-        $this->view->pager        = $pager;
-        $this->view->setModule    = true;
-        $this->view->branchGroups = $branchGroups;
-        $this->view->canBeChanged = common::canModify('execution', $execution); // Determines whether an object is editable.
+        $this->view->title             = $title;
+        $this->view->position          = $position;
+        $this->view->productID         = $productID;
+        $this->view->execution         = $execution;
+        $this->view->stories           = $stories;
+        $this->view->linkedTaskStories = $this->story->getIdListWithTask($executionID);
+        $this->view->allPlans          = $allPlans;
+        $this->view->summary           = $this->product->summary($stories);
+        $this->view->orderBy           = $orderBy;
+        $this->view->type              = $this->session->executionStoryBrowseType;
+        $this->view->param             = $param;
+        $this->view->moduleTree        = $this->loadModel('tree')->getProjectStoryTreeMenu($executionID, $startModuleID = 0, array('treeModel', 'createStoryLink'));
+        $this->view->modulePairs       = $modulePairs;
+        $this->view->tabID             = 'story';
+        $this->view->storyTasks        = $storyTasks;
+        $this->view->storyBugs         = $storyBugs;
+        $this->view->storyCases        = $storyCases;
+        $this->view->users             = $users;
+        $this->view->pager             = $pager;
+        $this->view->setModule         = true;
+        $this->view->branchGroups      = $branchGroups;
+        $this->view->canBeChanged      = common::canModify('execution', $execution); // Determines whether an object is editable.
 
         $this->display();
     }
diff --git a/module/execution/js/story.js b/module/execution/js/story.js
index e157d6c8c6..a78ba547fa 100644
--- a/module/execution/js/story.js
+++ b/module/execution/js/story.js
@@ -32,12 +32,38 @@ $(function()
     /* Get checked stories. */
     $('#batchToTaskButton').on('click', function()
     {
-        var storyIdList = '';
+        var storyIdList     = '';
+        var linedTaskIdList = '';
+        var unlinTaskIdList = '';
         $("input[name^='storyIdList']:checked").each(function()
         {
+            if(linkedTaskStories[$(this).val()])
+            {
+                linedTaskIdList += '[' + $(this).val() +']';
+            }
+            else
+            {
+                unlinTaskIdList += $(this).val() + ',';
+            }
             storyIdList += $(this).val() + ',';
-            $('#storyIdList').val(storyIdList);
         });
+
+        if(linedTaskIdList)
+        {
+            confirmStoryToTask = confirmStoryToTask.replace('%s', linedTaskIdList);
+            if(confirm(confirmStoryToTask))
+            {
+                $('#storyIdList').val(storyIdList);
+            }
+            else
+            {
+                $('#storyIdList').val(unlinTaskIdList);
+            }
+        }
+        else
+        {
+            $('#storyIdList').val(storyIdList);
+        }
     });
 
     $('.sorter-false a').unwrap();
diff --git a/module/execution/lang/en.php b/module/execution/lang/en.php
index 916ae5454e..b909685a16 100644
--- a/module/execution/lang/en.php
+++ b/module/execution/lang/en.php
@@ -345,6 +345,7 @@ $lang->execution->unfinishedExecution         = "This {$lang->executionCommon} h
 $lang->execution->unfinishedTask              = "[%s] unfinished tasks. ";
 $lang->execution->unresolvedBug               = "[%s] unresolved bugs. ";
 $lang->execution->projectNotEmpty             = 'Project cannot be empty.';
+$lang->execution->confirmStoryToTask          = $lang->SRCommon . '%s are converted to tasks in the current. Do you want to convert them anyways?';
 
 /* Statistics. */
 $lang->execution->charts = new stdclass();
diff --git a/module/execution/lang/zh-cn.php b/module/execution/lang/zh-cn.php
index ce76413e38..31a16f3ea0 100644
--- a/module/execution/lang/zh-cn.php
+++ b/module/execution/lang/zh-cn.php
@@ -345,6 +345,7 @@ $lang->execution->unfinishedExecution         = "该{$lang->executionCommon}下
 $lang->execution->unfinishedTask              = "[%s]个未完成的任务，";
 $lang->execution->unresolvedBug               = "[%s]个未解决的bug，";
 $lang->execution->projectNotEmpty             = '所属项目不能为空。';
+$lang->execution->confirmStoryToTask          = '%s' . $lang->SRCommon . '已经在当前' . $lang->execution->common . '中转了任务，请确认是否重复转任务。';
 
 /* 统计。*/
 $lang->execution->charts = new stdclass();
diff --git a/module/execution/view/story.html.php b/module/execution/view/story.html.php
index 9c3ac7aea6..5361f817f5 100644
--- a/module/execution/view/story.html.php
+++ b/module/execution/view/story.html.php
@@ -21,6 +21,8 @@
 <?php js::set('confirmUnlinkStory', $lang->execution->confirmUnlinkStory)?>
 <?php js::set('typeError', sprintf($this->lang->error->notempty, $this->lang->task->type))?>
 <?php js::set('workingHourError', sprintf($this->lang->error->notempty, $this->lang->workingHour))?>
+<?php js::set('linkedTaskStories', $linkedTaskStories);?>
+<?php js::set('confirmStoryToTask', $lang->execution->confirmStoryToTask);?>
 <style>
 .btn-group a i.icon-plus, .btn-group a i.icon-link {font-size: 16px;}
 .btn-group a.btn-secondary, .btn-group a.btn-primary {border-right: 1px solid rgba(255,255,255,0.2);}
diff --git a/module/story/model.php b/module/story/model.php
index 25a49f5c07..7c8fb4b888 100644
--- a/module/story/model.php
+++ b/module/story/model.php
@@ -1769,7 +1769,7 @@ class storyModel extends model
 
         /* Create tasks. */
         $tasks   = array();
-        $stories = $this->getByList($data->storyIdList);
+        $stories = empty($data->storyIdList) ? array() : $this->getByList($data->storyIdList);
         foreach($stories as $story)
         {
             if(strpos('draft,closed', $story->status) !== false) continue;
@@ -2766,6 +2766,22 @@ class storyModel extends model
             ->fetchPairs('id', 'title');
     }
 
+    /**
+     * Get the story ID list of the linked to task.
+     *
+     * @param  int    $executionID
+     * @access public
+     * @return array
+     */
+    public function getIdListWithTask($executionID)
+    {
+        return $this->dao->select('story')->from(TABLE_TASK)
+            ->where('execution')->eq($executionID)
+            ->andWhere('story')->ne(0)
+            ->andWhere('deleted')->eq(0)
+            ->fetchPairs();
+    }
+
     /**
      * Get doing projects' members of a story.
      *