diff --git a/README.md b/README.md
index 484544b..d5071c9 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,13 @@ class App extends React.Component<any, any> {
 | images      | string[]     | []      | image source array | true  |
 | activeIndex | number       | 0       | active image index | false |
 
+## TODO
+
+- [] add button icon
+- [] add toolbar
+- [] optimize image zoom
+- [] optimise image change
+
 ## License
 
 MIT