diff --git a/tree/tree.c b/tree/tree.c
new file mode 100644
index 0000000..28b903e
--- /dev/null
+++ b/tree/tree.c
@@ -0,0 +1,9 @@
+//
+//  tree.c
+//  ZE-Standard-Libraries
+//
+//  Created by 胡一兵 on 2018/6/11.
+//  Copyright © 2018年 ZE. All rights reserved.
+//
+
+#include "tree.h"
diff --git a/tree/tree.h b/tree/tree.h
new file mode 100644
index 0000000..f1f866b
--- /dev/null
+++ b/tree/tree.h
@@ -0,0 +1,14 @@
+//
+//  tree.h
+//  ZE-Standard-Libraries
+//
+//  Created by 胡一兵 on 2018/6/11.
+//  Copyright © 2018年 ZE. All rights reserved.
+//
+
+#ifndef tree_h
+#define tree_h
+
+#include <stdio.h>
+
+#endif /* tree_h */