diff --git a/module/action/lang/en.php b/module/action/lang/en.php
index b971bdd570..e76cc268d3 100755
--- a/module/action/lang/en.php
+++ b/module/action/lang/en.php
@@ -137,6 +137,7 @@ $lang->action->desc->linkchildtask      = '$date, <strong>$actor</strong> linked
 $lang->action->desc->unlinkchildrentask = '$date, <strong>$actor</strong> unlinked a child task <strong>$extra</strong>。' . "\n";
 $lang->action->desc->linkparenttask     = '$date, <strong>$actor</strong> linked to a parent task <strong>$extra</strong>。' . "\n";
 $lang->action->desc->unlinkparenttask   = '$date, <strong>$actor</strong> unlinked a parent task <strong>$extra</strong>。' . "\n";
+$lang->action->desc->deletechildrentask = '$date, <strong>$actor</strong> deleted a child task <strong>$extra</strong>。' . "\n";
 
 /* Historical record of actions when associating and removing cases. */
 $lang->action->desc->linkrelatedcase   = '$date, <strong>$actor</strong> linked a case <strong>$extra</strong>.' . "\n";
@@ -209,6 +210,7 @@ $lang->action->label->unlinkparenttask    = "unlink from parent task";
 $lang->action->label->batchcreate         = "batch created tasks";
 $lang->action->label->createchildren      = "create child tasks";
 $lang->action->label->managed             = "managed";
+$lang->action->label->deletechildrentask  = "delete children task";
 
 /* Dynamic information is grouped by object. */
 $lang->action->dynamicAction = new stdclass;
@@ -281,6 +283,7 @@ $lang->action->dynamicAction->task['canceled']             = 'Cancel Task';
 $lang->action->dynamicAction->task['activated']            = 'Activate Task';
 $lang->action->dynamicAction->task['createchildren']       = 'Create Child Task';
 $lang->action->dynamicAction->task['unlinkparenttask']     = 'Unlink Parent Task';
+$lang->action->dynamicAction->task['deletechildrentask']   = 'Delete children task';
 $lang->action->dynamicAction->task['linkparenttask']       = 'Link Parent Task';
 $lang->action->dynamicAction->task['linkchildtask']        = 'Link Child Task';
 $lang->action->dynamicAction->task['undeleted']            = 'Restore Task';
diff --git a/module/action/lang/zh-cn.php b/module/action/lang/zh-cn.php
index e6d26c50d3..c5315de6ef 100755
--- a/module/action/lang/zh-cn.php
+++ b/module/action/lang/zh-cn.php
@@ -137,6 +137,7 @@ $lang->action->desc->linkchildtask      = '$date, 由 <strong>$actor</strong> 
 $lang->action->desc->unlinkchildrentask = '$date, 由 <strong>$actor</strong> 移除子任务 <strong>$extra</strong>。' . "\n";
 $lang->action->desc->linkparenttask     = '$date, 由 <strong>$actor</strong> 关联到父任务 <strong>$extra</strong>。' . "\n";
 $lang->action->desc->unlinkparenttask   = '$date, 由 <strong>$actor</strong> 从父任务<strong>$extra</strong>取消关联。' . "\n";
+$lang->action->desc->deletechildrentask = '$date, 由 <strong>$actor</strong> 删除子任务<strong>$extra</strong>。' . "\n";
 
 /* 关联用例和移除用例时的历史操作记录。*/
 $lang->action->desc->linkrelatedcase   = '$date, 由 <strong>$actor</strong> 关联相关用例 <strong>$extra</strong>。' . "\n";
@@ -209,6 +210,7 @@ $lang->action->label->unlinkparenttask    = "从父任务取消关联";
 $lang->action->label->batchcreate         = "批量创建任务";
 $lang->action->label->createchildren      = "创建子任务";
 $lang->action->label->managed             = "维护";
+$lang->action->label->deletechildrentask  = "删除子任务";
 
 /* 动态信息按照对象分组 */
 $lang->action->dynamicAction = new stdclass();
@@ -281,6 +283,7 @@ $lang->action->dynamicAction->task['canceled']             = '取消任务';
 $lang->action->dynamicAction->task['activated']            = '激活任务';
 $lang->action->dynamicAction->task['createchildren']       = '创建子任务';
 $lang->action->dynamicAction->task['unlinkparenttask']     = '从父任务取消关联';
+$lang->action->dynamicAction->task['deletechildrentask']   = '删除子任务';
 $lang->action->dynamicAction->task['linkparenttask']       = '关联到父任务';
 $lang->action->dynamicAction->task['linkchildtask']        = '关联子任务';
 $lang->action->dynamicAction->task['undeleted']            = '还原任务';
diff --git a/module/action/model.php b/module/action/model.php
index 304f139054..7f9fc54d06 100755
--- a/module/action/model.php
+++ b/module/action/model.php
@@ -303,7 +303,7 @@ class actionModel extends model
                 }
                 $action->extra = trim(trim($action->extra), ',');
             }
-            elseif($actionName == 'totask' or $actionName == 'linkchildtask' or $actionName == 'unlinkchildrentask' or $actionName == 'linkparenttask' or $actionName == 'unlinkparenttask')
+            elseif($actionName == 'totask' or $actionName == 'linkchildtask' or $actionName == 'unlinkchildrentask' or $actionName == 'linkparenttask' or $actionName == 'unlinkparenttask' or $actionName == 'deletechildrentask')
             {
                 $name = $this->dao->select('name')->from(TABLE_TASK)->where('id')->eq($action->extra)->fetch('name');
                 if($name) $action->extra = common::hasPriv('task', 'view') ? html::a(helper::createLink('task', 'view', "taskID=$action->extra"), "#$action->extra " . $name) : "#$action->extra " . $name;
diff --git a/module/task/control.php b/module/task/control.php
index 603b8fe9e2..2614415927 100644
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -1168,7 +1168,11 @@ class task extends control
         else
         {
             $this->task->delete(TABLE_TASK, $taskID);
-            if($task->parent > 0) $this->task->updateParentStatus($task->id);
+            if($task->parent > 0) 
+            {
+                $this->task->updateParentStatus($task->id);
+                $this->loadModel('action')->create('task', $task->parent, 'deleteChildrenTask', '', $taskID);
+            }
             if($task->fromBug != 0) $this->dao->update(TABLE_BUG)->set('toTask')->eq(0)->where('id')->eq($task->fromBug)->exec();
             if($task->story) $this->loadModel('story')->setStage($task->story);