diff --git a/application/admin/controller/widget/Images.php b/application/admin/controller/widget/Images.php
index 6151a151..d5c407ae 100644
--- a/application/admin/controller/widget/Images.php
+++ b/application/admin/controller/widget/Images.php
@@ -25,9 +25,13 @@ class Images extends AuthController
      */
    public function index()
    {
-       $pid = input('pid') != NULL ?input('pid'):session('pid');
-       if($pid != NULL)session('pid',$pid);
-       if(!empty(session('pid')))$pid = session('pid');
+       $pid = 0;
+       if(input('pid') && is_numeric(input('pid'))){
+           $pid = input('pid');
+           session('pid',$pid);
+       }else{
+           $pid = session('pid')?session('pid'):0;
+       }
        $this->assign('pid',$pid);
        //分类标题
        $typearray = Category::getAll();
diff --git a/application/admin/view/widget/images.php b/application/admin/view/widget/images.php
index d888a52c..28e259bd 100644
--- a/application/admin/view/widget/images.php
+++ b/application/admin/view/widget/images.php
@@ -98,7 +98,7 @@
 </body>
 </html>
 <script>
-    var pid = {$pid};//当前图片分类ID
+    var pid = {$pid+0};//当前图片分类ID
     var parentinputname = '{$Request.param.fodder}';//父级input name
     var uploadurl = "{:Url('upload',array('pid'=>$Request.param.pid))}"; //上传图片地址
     var deleteurl = "{:Url('delete')}";//删除图片地址