diff --git a/cocos/ui/UISlider.cpp b/cocos/ui/UISlider.cpp
index a664425885..039182c1e4 100644
--- a/cocos/ui/UISlider.cpp
+++ b/cocos/ui/UISlider.cpp
@@ -367,7 +367,7 @@ void Slider::setPercent(int percent)
     _slidBallRenderer->setPosition(dis, _contentSize.height / 2.0f);
     if (_scale9Enabled)
     {
-        _progressBarRenderer->setPreferredSize(Size(dis,_progressBarTextureSize.height));
+        _progressBarRenderer->setPreferredSize(Size(dis,_contentSize.height));
     }
     else
     {