diff --git a/Application/Admin/Controller/ToolController.class.php b/Application/Admin/Controller/ToolController.class.php
index 5e41ec38a..39598df6e 100644
--- a/Application/Admin/Controller/ToolController.class.php
+++ b/Application/Admin/Controller/ToolController.class.php
@@ -39,13 +39,11 @@ class ToolController extends ThinkController {
             $map_['name']=array("in",'wei_xin,wei_xin_app,weixin');
             M('tool','tab_')->where($map_)->setField('status','0');
         }
-        if (!is_numeric($config['channel_rate'])) {
+        if (isset($config['channel_rate']) && ($config['channel_rate'] > 100 || !is_numeric($config['channel_rate']))) {
             $this->error('请输入正确的渠道费率');
         }
-        if ($config['channel_rate'] > 100) {
-            $this->error('渠道费率最大值为100%');
-        }
-        $config['channel_rate'] = round($config['channel_rate'], 2);
+        if (isset($config['channel_rate'])) $config['channel_rate'] =  round($config['channel_rate'], 2);
+        
         $flag   = M('Tool','tab_')->where($map)->setField($data);
         if($flag !== false){
             $config['status']=$_POST['status'];