diff --git a/Software/Development/OperatingSystem/Linux/User/Linux_常用目录集合.md b/Software/Development/OperatingSystem/Linux/User/Linux_常用目录集合.md
index 423a62b..29a394d 100644
--- a/Software/Development/OperatingSystem/Linux/User/Linux_常用目录集合.md
+++ b/Software/Development/OperatingSystem/Linux/User/Linux_常用目录集合.md
@@ -2,6 +2,7 @@
 
 | Directory               | Descriptions |
 |-------------------------|--------------|
+| /sys/firmware           | Device Tree 目录展开 |
 | /usr/share/applications | Desktop Entry 文件 (*.desktop) |
 | /usr/share/icons        | 图标文件 |
 | /usr/share/mime         | MIME配置文件放在 |