diff --git a/docs/hardware/en/lichee/RV_Nano/1_intro.md b/docs/hardware/en/lichee/RV_Nano/1_intro.md
index 2d305bfe..e2575c03 100644
--- a/docs/hardware/en/lichee/RV_Nano/1_intro.md
+++ b/docs/hardware/en/lichee/RV_Nano/1_intro.md
@@ -62,7 +62,6 @@ Datasheets, schematic diagrams, dimension drawings, and more can be found here:
 
 - [Datasheet](https://github.com/sophgo/sophgo-doc/releases)
 - [Compiler Toolchain Download](https://sophon-file.sophon.cn/sophon-prod-s3/drive/23/03/07/16/host-tools.tar.gz)
-- [Software SDK Download](https://github.com/sophgo/cvi_mmf_sdk)
 - [SDK Development Documentation Summary](https://developer.sophgo.com/thread/471.html)
 - [HDK Development Documentation Summary](https://developer.sophgo.com/thread/472.html)
 - [TPU SDK Development Resources Summary](https://developer.sophgo.com/thread/473.html)
diff --git a/docs/hardware/zh/lichee/RV_Nano/6_develop_mainline.md b/docs/hardware/zh/lichee/RV_Nano/6_develop_mainline.md
index c39457e9..c33d0329 100644
--- a/docs/hardware/zh/lichee/RV_Nano/6_develop_mainline.md
+++ b/docs/hardware/zh/lichee/RV_Nano/6_develop_mainline.md
@@ -50,7 +50,6 @@ https://github.com/sipeed/LicheeRV-Nano-Build/blob/main/.github/workflows/lichee
 文档:
 
 - 编译工具链下载地址：https://sophon-file.sophon.cn/sophon-prod-s3/drive/23/03/07/16/host-tools.tar.gz
-- 软件SDK下载地址： https://github.com/sophgo/cvi_mmf_sdk
 - SDK开发文档汇总：https://developer.sophgo.com/thread/471.html
 - HDK 开发文档汇总： https://developer.sophgo.com/thread/472.html
 - TPU SDK 开发资料汇总：https://developer.sophgo.com/thread/473.html