diff --git a/.gitignore b/.gitignore
index 82d8112..c6fe171 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /Test/bin
 /Test/obj
+/Test/.vs
\ No newline at end of file
diff --git a/MetaNN/model_rel/param_initializer/param_initializer.h b/MetaNN/model_rel/param_initializer/param_initializer.h
index c773b75..5a09dd8 100644
--- a/MetaNN/model_rel/param_initializer/param_initializer.h
+++ b/MetaNN/model_rel/param_initializer/param_initializer.h
@@ -72,10 +72,10 @@ class ParamInitializer
         auto it = m_params.find(name);
         return it != m_params.end();
     }
-    
+
+	std::map<std::string, Matrix<TElem, DeviceTags::CPU>> m_params;
 private:
     TFillers m_filler;
-    std::map<std::string, Matrix<TElem, DeviceTags::CPU>> m_params;
 };
 
 template <typename TElem, typename...TPolicies>
diff --git a/Test/MetaNN.sln b/Test/MetaNN.sln
new file mode 100644
index 0000000..ead4fb1
--- /dev/null
+++ b/Test/MetaNN.sln
@@ -0,0 +1,31 @@
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+EndProject
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new file mode 100644
index 0000000..c89f142
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+++ b/Test/MetaNN.vcxproj
@@ -0,0 +1,347 @@
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new file mode 100644
index 0000000..9fe702a
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+    </ClInclude>
+    <ClInclude Include="policies\test_policy_operations.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="policies\test_policy_selector.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/Test/MetaNN.vcxproj.user b/Test/MetaNN.vcxproj.user
new file mode 100644
index 0000000..6e2aec7
--- /dev/null
+++ b/Test/MetaNN.vcxproj.user
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 5c022d6..245eb1c 100644
--- a/readme.md
+++ b/readme.md
@@ -3,4 +3,6 @@ MetaNN 中包含了很多新的编程尝试，其开发过程也是一个不断
 
 MetaNN 的衍化并不快，但到目前为止一直在进行。衍化是在主分支上进行的，这个分支与主分支的代码会存在较多的差异，而随着开发的进行，这种差异也会越来越大。如果希望结合代码来阅读《C++模板元编程实战》这本书，那么应当关注于这个分支的代码。如果希望获取到 MetaNN 中最新的代码，同时对比与书中讨论内容的差异，那么应当获取主分支中的代码。
 
-除了内容上的差异外，主分支与本分支的编译环境也有所差异。本分支使用了 Makefile 来编译代码，在三个环境（Ubuntu + GCC, Ubuntu + clang, Windows + mingw-64）上进行了测试。但主分支则使用 Codelite 来组织代码，同时只在 Ubuntu + GCC 上进行了测试。
\ No newline at end of file
+除了内容上的差异外，主分支与本分支的编译环境也有所差异。本分支使用了 Makefile 来编译代码，在三个环境（Ubuntu + GCC, Ubuntu + clang, Windows + mingw-64）上进行了测试。但主分支则使用 Codelite 来组织代码，同时只在 Ubuntu + GCC 上进行了测试。
+
+更新：使用 Visual Studio 2019 Preview 已经可以正确编译该分支的代码，工程文件位于 Test/MetaNN.sln。为了加快编译速度，默认开启了多处理器编译选项，但会占用约 12~16 GB 的内存。如果内存资源不足，请关闭该选项（/MP）后进行编译。单核编译的峰值内存占用约为 7 GB，降低这一数值需要后续 Visual Studio 版本的进一步优化。
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