diff --git a/.gitmodules b/.gitmodules
index dcc3b8dd1..7a182c41d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,9 +10,6 @@
 [submodule "Ubiquitous/Nuttx_Fusion_XiUOS/apps"]
 	path = Ubiquitous/Nuttx_Fusion_XiUOS/apps
 	url = https://code.gitlink.org.cn/wgzAIIT/incubator-nuttx-apps.git
-[submodule "Ubiquitous/Nuttx_Fusion_XiUOS/nuttx"]
-	path = Ubiquitous/Nuttx_Fusion_XiUOS/nuttx
-	url = https://code.gitlink.org.cn/wgzAIIT/incubator-nuttx.git
 [submodule "Ubiquitous/XiZi/fs/lwext4/lwext4_submodule"]
 	path = Ubiquitous/XiZi/fs/lwext4/lwext4_submodule
 	url = https://gitlink.org.cn/xuos/lwext4_filesystem_support_XiUOS.git
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/nuttx b/Ubiquitous/Nuttx_Fusion_XiUOS/nuttx
deleted file mode 160000
index 3fede4209..000000000
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/nuttx
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3fede42098e5883f336d846ac30edfe749899494