diff --git a/components/icon/index.en-US.md b/components/icon/index.en-US.md
index cd18e15e25..27b6de2a00 100644
--- a/components/icon/index.en-US.md
+++ b/components/icon/index.en-US.md
@@ -29,6 +29,19 @@ ReactDOM.render(, mountNode);
| component | The component used for the root node. This will override the **`type`** property. | ComponentType | - |
| twoToneColor | Only support the two-tone icon. Specific the primary color. | string (hex color) | - |
+### Svg icons
+
+We introduced svg icons in `3.9.x` version replacing font icons which brings benefits below:
+
+- Complete offline usage of icon, no dependency of alipay cdn font icon file and no more empty square during downloading than no need to deploy icon font files locally either.
+- Much more display accuracy in lower-level screens.
+- Support multiple colors for icon.
+- No need to change built-in icons with overriding styles by providing more props in component.
+
+More disscussion of svg icon reference to [#10353](https://github.com/ant-design/ant-design/issues/10353).
+
+> ⚠️ About the extra bundle size brought by all svg icons we imported in antd@3.9.x, we will provide new API to allow developers importing icons as your need, you can trace [#12011](https://github.com/ant-design/ant-design/issues/12011) for further progress.
+
The properties `theme`, `component` and `twoToneColor` are added in `antd@3.9.x`. The best practice is to pass the property `theme` to every `` components.
```jsx
@@ -41,6 +54,8 @@ All the icons will render to `