diff --git a/pointviewpager/src/main/java/com/dong/pointviewpager/adapter/LoopPagerAdapter.java b/pointviewpager/src/main/java/com/dong/pointviewpager/adapter/LoopPagerAdapter.java
index 8932d45..aa8dc90 100644
--- a/pointviewpager/src/main/java/com/dong/pointviewpager/adapter/LoopPagerAdapter.java
+++ b/pointviewpager/src/main/java/com/dong/pointviewpager/adapter/LoopPagerAdapter.java
@@ -77,7 +77,7 @@ public boolean isViewFromObject(View view, Object object) {
     public Object instantiateItem(ViewGroup container, int position) {
         if (isCard) {
             CardView cardView = (CardView) View.inflate(context, R.layout.item_pager, null);
-            cardView.setRadius(radius);
+            cardView.setBackgroundColor(Color.TRANSPARENT);
             cardView.setCardElevation(elevation);
             cardView.setContentPadding(padding, padding, padding, padding);
             RoundImageView imageView = cardView.findViewById(R.id.item_page_imageview);