diff --git a/.gitmodules b/.gitmodules
index 3a8d8eab7..1ef79ea09 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,6 +7,3 @@
 [submodule "Ubiquitous/Nuttx/apps"]
 	path = Ubiquitous/Nuttx/apps
 	url = https://gitlink.org.cn/wgzAIIT/incubator-nuttx-apps.git
-[submodule "Ubiquitous/Nuttx/nuttx"]
-	path = Ubiquitous/Nuttx/nuttx
-	url = https://gitlink.org.cn/wgzAIIT/incubator-nuttx.git
diff --git a/Ubiquitous/Nuttx/nuttx b/Ubiquitous/Nuttx/nuttx
deleted file mode 160000
index 3fede4209..000000000
--- a/Ubiquitous/Nuttx/nuttx
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3fede42098e5883f336d846ac30edfe749899494