diff --git a/bsp/w801/README.md b/bsp/w801/README.md
index 0d3d57aa7..743c9ab2e 100644
--- a/bsp/w801/README.md
+++ b/bsp/w801/README.md
@@ -1,3 +1,16 @@
+# dependency
+
+1. W800 SDK
+https://www.winnermicro.com/upload/1/editor/1637552741307.rar
+
+2. W800 Serial download tool
+
+https://www.winnermicro.com/upload/1/editor/1623809255593.rar
+
+3. CDK IDE
+
+https://occ.t-head.cn/community/download?id=575997419775328256
+
 # usage
 
 1. use "W800_SDK.cdkproj" to replace "wm_sdk_w800\tools\w800\projects\SDK_Project\project\CDK_WS\W800_SDK\W800_SDK.cdkproj"