diff --git a/TinySTL/BinarySearchTree.h b/TinySTL/BinarySearchTree.h
new file mode 100644
index 0000000..221fd32
--- /dev/null
+++ b/TinySTL/BinarySearchTree.h
@@ -0,0 +1,15 @@
+#ifndef _BINARY_SEARCH_TREE_H_
+#define _BINARY_SEARCH_TREE_H_
+
+#include "Allocator.h"
+
+namespace TinySTL{
+	//class of binary_search_tree
+	template<class T, class Alloc = TinySTL::allocator<T>>
+	class binary_search_tree{};
+	//class of bst iterator
+	template<class T>
+	class bst_iter{};
+}
+
+#endif
\ No newline at end of file
diff --git a/TinySTL/TinySTL.vcxproj b/TinySTL/TinySTL.vcxproj
index 28ffe5d..d42101c 100644
--- a/TinySTL/TinySTL.vcxproj
+++ b/TinySTL/TinySTL.vcxproj
@@ -86,6 +86,7 @@
     <ClInclude Include="Algorithm.h" />
     <ClInclude Include="Alloc.h" />
     <ClInclude Include="Allocator.h" />
+    <ClInclude Include="BinarySearchTree.h" />
     <ClInclude Include="Bitmap.h" />
     <ClInclude Include="CircularBuffer.h" />
     <ClInclude Include="Construct.h" />
diff --git a/TinySTL/TinySTL.vcxproj.filters b/TinySTL/TinySTL.vcxproj.filters
index ea8ac16..ce861fc 100644
--- a/TinySTL/TinySTL.vcxproj.filters
+++ b/TinySTL/TinySTL.vcxproj.filters
@@ -1,84 +1,87 @@
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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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+    <Filter Include="头文件">
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+    <ClInclude Include="Vector.h">
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 </Project>
\ No newline at end of file