diff --git a/xfce4.md b/xfce4.md
index 4a076d2..105e176 100644
--- a/xfce4.md
+++ b/xfce4.md
@@ -1 +1,8 @@
 # xfce4 组件介绍
+* cairo
+* harfbuzz
+* freetype2
+* pixman
+* 
+# Cairo 
+cairo is a vector graphics library with cross-device output support