diff --git a/module/action/control.php b/module/action/control.php
index 61c8f3b71c..35bd340480 100644
--- a/module/action/control.php
+++ b/module/action/control.php
@@ -37,18 +37,19 @@ class action extends control
         $this->session->set('testtaskList',    $uri);
         $this->session->set('docList',         $uri);
 
-        /* Header and position. */
-        $this->view->header->title = $this->lang->action->trash;
-        $this->view->position[]    = $this->lang->action->trash;
-
         /* Get deleted objects. */
         $this->app->loadClass('pager', $static = true);
-        $pager = pager::init($recTotal, $recPerPage, $pageID);
-        $this->view->trashes = $this->action->getTrashes($orderBy, $pager);
-        $this->view->users   = $this->loadModel('user')->getPairs('noletter');
-        $this->view->users['system'] = 'system';
+        $pager   = pager::init($recTotal, $recPerPage, $pageID);
+        $trashes = $this->action->getTrashes($orderBy, $pager);
+
+        /* Title and position. */
+        $this->view->title      = $this->lang->action->trash;
+        $this->view->position[] = $this->lang->action->trash;
+
+        $this->view->trashes = $trashes;
         $this->view->orderBy = $orderBy;
         $this->view->pager   = $pager;
+        $this->view->users   = $this->loadModel('user')->getPairs('noletter');
         $this->display();
     }
 
@@ -66,15 +67,35 @@ class action extends control
     }
 
     /**
-     * Hide object. 
+     * Hide an deleted object. 
      * 
      * @param  int    $actionID 
      * @access public
      * @return void
      */
-    public function hide($actionID)
+    public function hideOne($actionID)
     {
-        $this->action->hide($actionID);
+        $this->action->hideOne($actionID);
         die(js::reload('parent'));
     }
+
+    /**
+     * Hide all deleted objects.
+     * 
+     * @param  string $confirm 
+     * @access public
+     * @return void
+     */
+    public function hideAll($confirm = 'no')
+    {
+        if($confirm == 'no')
+        {
+            die(js::confirm($this->lang->action->confirmHideAll, inlink('hideAll', "confirm=yes")));
+        }
+        else
+        {
+            $this->action->hideAll();
+            die(js::reload('parent'));
+        }
+    }
 }
diff --git a/module/action/lang/zh-cn.php b/module/action/lang/zh-cn.php
index 8831079dec..c9aa49309b 100644
--- a/module/action/lang/zh-cn.php
+++ b/module/action/lang/zh-cn.php
@@ -10,10 +10,6 @@
  * @link        http://www.zentao.net
  */
 $lang->action->common   = '系统日志';
-$lang->action->trash    = '回收站';
-$lang->action->undelete = '还原';
-$lang->action->hide     = '隐藏';
-
 $lang->action->product    = '产品';
 $lang->action->project    = '项目';
 $lang->action->objectType = '对象类型';
@@ -23,9 +19,16 @@ $lang->action->actor      = '操作者';
 $lang->action->action     = '动作';
 $lang->action->actionID   = '记录ID';
 $lang->action->date       = '日期';
-$lang->action->trashTips  = '提示：为了保证系统的完整性，禅道系统的删除都是标记删除。';
-$lang->action->textDiff   = '文本格式';
-$lang->action->original   = '原始格式';
+
+$lang->action->trash    = '回收站';
+$lang->action->undelete = '还原';
+$lang->action->hideOne  = '隐藏';
+$lang->action->hideAll  = '全部隐藏';
+
+$lang->action->trashTips      = '提示：为了保证系统的完整性，禅道系统的删除都是标记删除。';
+$lang->action->textDiff       = '文本格式';
+$lang->action->original       = '原始格式';
+$lang->action->confirmHideAll = '您确定要全部隐藏这些记录吗？';
 
 $lang->action->dynamic = new stdclass();
 $lang->action->dynamic->today      = '今天';
diff --git a/module/action/model.php b/module/action/model.php
index f0048e498a..a25893c2ef 100644
--- a/module/action/model.php
+++ b/module/action/model.php
@@ -13,9 +13,9 @@
 <?php
 class actionModel extends model
 {
-    const CAN_UNDELETED = 1;    // The deleted object can be undeleted or not.
-    const BE_UNDELETED  = 0;    // The deleted object has been undeleted or not.
-    const BE_HIDDEN     = 2;
+    const BE_UNDELETED  = 0;    // The deleted object has been undeleted.
+    const CAN_UNDELETED = 1;    // The deleted object can be undeleted.
+    const BE_HIDDEN     = 2;    // The deleted object has been hidded.
 
     /**
      * Create a action.
@@ -611,17 +611,54 @@ class actionModel extends model
     }
 
     /**
-     * Hide object. 
+     * Undelete a record.
+     * 
+     * @param  int      $actionID 
+     * @access public
+     * @return void
+     */
+    public function undelete($actionID)
+    {
+        $action = $this->loadModel('action')->getById($actionID);
+        if($action->action != 'deleted') return;
+
+        /* Update deleted field in object table. */
+        $table = $this->config->objectTables[$action->objectType];
+        $this->dao->update($table)->set('deleted')->eq(0)->where('id')->eq($action->objectID)->exec();
+
+        /* Update action record in action table. */
+        $this->dao->update(TABLE_ACTION)->set('extra')->eq(ACTIONMODEL::BE_UNDELETED)->where('id')->eq($actionID)->exec();
+        $this->action->create($action->objectType, $action->objectID, 'undeleted');
+    }
+
+    /**
+     * Hide an object. 
      * 
      * @param  int    $actionID 
      * @access public
      * @return void
      */
-    public function hide($actionID)
+    public function hideOne($actionID)
     {
         $action = $this->getById($actionID);
         if($action->action != 'deleted') return;
+
         $this->dao->update(TABLE_ACTION)->set('extra')->eq(self::BE_HIDDEN)->where('id')->eq($actionID)->exec();
         $this->create($action->objectType, $action->objectID, 'hidden');
     }
+
+    /**
+     * Hide all deleted objects.
+     * 
+     * @access public
+     * @return void
+     */
+    public function hideAll()
+    {
+        $this->dao->update(TABLE_ACTION)
+            ->set('extra')->eq(self::BE_HIDDEN)
+            ->where('action')->eq('deleted')
+            ->andWhere('extra')->eq(self::CAN_UNDELETED)
+            ->exec();
+    }
 }
diff --git a/module/action/view/trash.html.php b/module/action/view/trash.html.php
index 1f0e3d169a..7713e3540b 100644
--- a/module/action/view/trash.html.php
+++ b/module/action/view/trash.html.php
@@ -36,7 +36,7 @@
     <td>
       <?php
       common::printLink('action', 'undelete', "actionid=$action->id", $lang->action->undelete, 'hiddenwin');
-      common::printLink('action', 'hide',     "actionid=$action->id", $lang->action->hide,   'hiddenwin');
+      common::printLink('action', 'hideOne',  "actionid=$action->id", $lang->action->hideOne,  'hiddenwin');
       ?>
     </td>
   </tr>
@@ -45,7 +45,12 @@
   <tfoot>
   <tr>
     <td colspan='6'>
-      <div class='f-left'><?php echo $lang->action->trashTips;?></div>
+      <?php if($trashes):?>
+      <div class='f-left'>
+        <?php echo html::linkButton($lang->action->hideAll, inlink('hideAll'), 'hiddenwin');?>
+        <?php echo $lang->action->trashTips;?>
+      </div>
+      <?php endif;?>
       <div><?php $pager->show();?></div>
     </td>
   </tr>