diff --git a/README_zh.md b/README_zh.md
index 41334f3c..6552acab 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -191,7 +191,7 @@ CherryUSB 快速入门、USB 基本概念，API 手册，Class 基本概念和
 
 ## 商业支持
 
-参考 https://cherryusb.readthedocs.io/zh-cn/latest/support/index.html。
+参考 https://cherryusb.readthedocs.io/zh-cn/latest/support/index.html 。
 
 ## 联系
 
diff --git a/docs/source/support/img/dwc2_hostuvc1.png b/docs/source/support/img/dwc2_hostuvc1.png
new file mode 100644
index 00000000..cebe4205
Binary files /dev/null and b/docs/source/support/img/dwc2_hostuvc1.png differ
diff --git a/docs/source/support/img/dwc2_hostuvc2.png b/docs/source/support/img/dwc2_hostuvc2.png
new file mode 100644
index 00000000..7218f9c4
Binary files /dev/null and b/docs/source/support/img/dwc2_hostuvc2.png differ
diff --git a/docs/source/support/index.rst b/docs/source/support/index.rst
index 209b597b..da1d94c5 100644
--- a/docs/source/support/index.rst
+++ b/docs/source/support/index.rst
@@ -10,7 +10,8 @@
 
 - 主机 UVC & UAC 类 DWC2 IP 中 ISO 驱动和 UAC/UVC 框架
 
-.. figure:: img/dwc2_hostuvc.png
+.. figure:: img/dwc2_hostuvc1.png
+.. figure:: img/dwc2_hostuvc2.png
 
 - 主机 UVC & UAC 类 MUSB IP 中 ISO 驱动和 UAC/UVC 框架, MUSB 需要为 mentor 公司制定的标准 IP