diff --git a/README.md b/README.md
index c985f21..95bfa4f 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@
 [vue]: https://github.com/vuejs/vue
 [server]: https://github.com/zhaojh329/rttys
 
-![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/rtty.png)
+![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/diagram.png)
 ![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/screen.gif)
 ![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/file.gif)
 
diff --git a/README_ZH.md b/README_ZH.md
index 9050f51..9fd4c85 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -32,7 +32,7 @@
 [vue]: https://github.com/vuejs/vue
 [服务端]: https://github.com/zhaojh329/rttys
 
-![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/rtty.png)
+![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/diagram.png)
 ![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/screen.gif)
 ![](https://raw.githubusercontent.com/zhaojh329/rtty/doc/file.gif)