diff --git a/debug/camera/README.md b/debug/camera/README.md
index 14f561e..cc1e6b1 100644
--- a/debug/camera/README.md
+++ b/debug/camera/README.md
@@ -4,6 +4,14 @@
 
 [参考文档 Camera_Engine_Rkisp_User_Manual](Camera_Engine_Rkisp_User_Manual)
 
+## 硬件框图
+
+![硬件连接图](./system_connection.png)
+
+- dphy0(D-PHY TX0)
+- dphy1(D-PHY TX1RX1)
+- dphy2(D-PHY RX0)
+
 ![RKISP1 topography ](./rkisp1.png)
 
 ## 名词说明
diff --git a/debug/camera/system_connection.png b/debug/camera/system_connection.png
new file mode 100644
index 0000000..3cd10ae
Binary files /dev/null and b/debug/camera/system_connection.png differ