diff --git a/WinDevice/Audio/AudioEnum.h b/WinDevice/Audio/AudioEnum.h
new file mode 100644
index 0000000..7f85ffe
--- /dev/null
+++ b/WinDevice/Audio/AudioEnum.h
@@ -0,0 +1,7 @@
+#pragma once
+
+enum AudioDeviceType
+{
+    Render,
+    Capture
+};
diff --git a/WinDevice/Audio/AudioManager.cpp b/WinDevice/Audio/AudioManager.cpp
new file mode 100644
index 0000000..1905505
--- /dev/null
+++ b/WinDevice/Audio/AudioManager.cpp
@@ -0,0 +1,110 @@
+#include "stdafx.h"
+
+#include "AudioManager.h"
+#include <iostream>
+
+
+AudioManager::AudioManager()
+{
+    // 创建设备枚举器
+}
+
+AudioManager::~AudioManager()
+{
+}
+
+HRESULT AudioManager::Init()
+{
+    HRESULT hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), nullptr, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator), reinterpret_cast<void**>(&pEnumerator));
+    if (FAILED(hr))
+    {
+        std::cerr << "Error: CoCreateInstance failed with hr = " << hr << std::endl;
+    }
+    hr = _UpdateDeviceList(eCapture);
+    if (FAILED(hr))
+    {
+        std::cerr << "Error: Update Capture Device failed with hr = " << hr << std::endl;
+    }
+    hr = _UpdateDeviceList(eRender);
+    if (FAILED(hr))
+    {
+        std::cerr << "Error: Update Render Device failed with hr = " << hr << std::endl;
+    }
+    return hr;
+}
+
+HRESULT AudioManager::Uninit()
+{
+    pEnumerator = nullptr;
+    pCaptureCollection = nullptr;
+    pRenderCollection = nullptr;
+    pDefaultCaptureEndpoint = nullptr;
+    pDefaultRenderEndpoint = nullptr;
+    return S_OK;
+}
+
+IMMDeviceCollection* AudioManager::GetDeviceList(EDataFlow flow)
+{
+    if (flow == eCapture)
+    {
+        UINT count;
+        pCaptureCollection->GetCount(&count);
+        if (count == 0)
+        {
+            _UpdateDeviceList(eCapture);
+        }
+        return pCaptureCollection;
+    }
+    if (flow == eRender)
+    {
+        UINT count;
+        pRenderCollection->GetCount(&count);
+        if (count == 0)
+        {
+            _UpdateDeviceList(eRender);
+        }
+        return pRenderCollection;
+    }
+    return nullptr;
+}
+
+IMMDevice* AudioManager::GetDefaultDevice(EDataFlow flow)
+{
+    if (flow == eCapture)
+    {
+        return pDefaultCaptureEndpoint;
+    }
+    if (flow == eRender)
+    {
+        return pDefaultRenderEndpoint;
+    }
+    return nullptr;
+}
+
+HRESULT AudioManager::_UpdateDeviceList(EDataFlow flow)
+{
+    HRESULT hr = S_OK;
+    if (flow == eCapture)
+    {
+        hr = pEnumerator->EnumAudioEndpoints(eCapture, DEVICE_STATE_ACTIVE, &pCaptureCollection);
+    }
+    if (flow == eRender)
+    {
+        hr = pEnumerator->EnumAudioEndpoints(eRender, DEVICE_STATE_ACTIVE, &pRenderCollection);
+    }
+    return hr;
+}
+
+HRESULT AudioManager::_UpdateDefaultDevice(EDataFlow flow)
+{
+    HRESULT hr = S_OK;
+    if (flow == eCapture)
+    {
+        hr = pEnumerator->GetDefaultAudioEndpoint(eCapture, eConsole, &pDefaultCaptureEndpoint);
+    }
+    if (flow == eRender)
+    {
+        hr = pEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &pDefaultRenderEndpoint);
+    }
+    return hr;
+}
diff --git a/WinDevice/Audio/AudioManager.h b/WinDevice/Audio/AudioManager.h
new file mode 100644
index 0000000..5588ad5
--- /dev/null
+++ b/WinDevice/Audio/AudioManager.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <Mmdeviceapi.h>
+
+class AudioManager
+{
+public:
+    AudioManager();
+    ~AudioManager();
+
+    HRESULT Init();
+    HRESULT Uninit();
+
+    IMMDeviceCollection* GetDeviceList(EDataFlow flow);
+    IMMDevice* GetDefaultDevice(EDataFlow flow);
+
+private:
+    IMMDeviceEnumerator* pEnumerator = NULL;
+    IMMDeviceCollection* pRenderCollection = NULL;
+    IMMDeviceCollection* pCaptureCollection = NULL;
+    IMMDevice* pDefaultRenderEndpoint = NULL;
+    IMMDevice* pDefaultCaptureEndpoint = NULL;
+
+    HRESULT _UpdateDeviceList(EDataFlow flow);
+    HRESULT _UpdateDefaultDevice(EDataFlow flow);
+};
diff --git a/WinDevice/Utils/SysInfoUtil.cpp b/WinDevice/Utils/SysInfoUtil.cpp
new file mode 100644
index 0000000..532abe8
--- /dev/null
+++ b/WinDevice/Utils/SysInfoUtil.cpp
@@ -0,0 +1,41 @@
+#include <stdafx.h>
+#include <cstdio>
+#include <iphlpapi.h>
+
+#include "SysInfoUtil.h"
+
+void SysInfoUtil::GetMacByGetAdaptersInfo(char* outMAC) const
+{
+    ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
+    PIP_ADAPTER_INFO pAdapter = NULL;
+    PIP_ADAPTER_INFO pAdapterInfo = (IP_ADAPTER_INFO*)malloc(ulOutBufLen);
+
+    // Make an initial call to GetAdaptersInfo to get the necessary size into the ulOutBufLen variable
+    if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS)
+    {
+        free(pAdapterInfo);
+        pAdapterInfo = (IP_ADAPTER_INFO*)malloc(ulOutBufLen);
+    }
+
+    //char MACAddress[32];
+    if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) == NO_ERROR)
+    {
+        pAdapter = pAdapterInfo;
+        while (pAdapter)
+        {
+            if (pAdapter->AddressLength == 6 && pAdapter->Type == MIB_IF_TYPE_ETHERNET)
+            {
+                sprintf_s(outMAC, 18, "%02X-%02X-%02X-%02X-%02X-%02X",
+                    int(pAdapter->Address[0]),
+                    int(pAdapter->Address[1]),
+                    int(pAdapter->Address[2]),
+                    int(pAdapter->Address[3]),
+                    int(pAdapter->Address[4]),
+                    int(pAdapter->Address[5]));
+                break;
+            }
+            pAdapter = pAdapter->Next;
+        }
+    }
+    free(pAdapterInfo);
+}
diff --git a/WinDevice/Utils/SysInfoUtil.h b/WinDevice/Utils/SysInfoUtil.h
new file mode 100644
index 0000000..339ff17
--- /dev/null
+++ b/WinDevice/Utils/SysInfoUtil.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#pragma comment(lib, "IPHLPAPI.lib")
+
+class SysInfoUtil
+{
+public:
+    void GetMacByGetAdaptersInfo(char* outMAC) const;
+};
diff --git a/WinDevice/WinDevice.cpp b/WinDevice/WinDevice.cpp
index 8907baa..570225f 100644
--- a/WinDevice/WinDevice.cpp
+++ b/WinDevice/WinDevice.cpp
@@ -1,11 +1,26 @@
 // WinDevice.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
 //
 
+#include <chrono>
 #include <iostream>
 
+#include "Utils/SysInfoUtil.h"
+
+using namespace std;
 int main()
 {
-    std::cout << "Hello World!\n";
+    SysInfoUtil util;
+    char mac[18];
+
+    // 测量函数调用的耗时
+    auto start = chrono::high_resolution_clock::now();
+    util.GetMacByGetAdaptersInfo(mac);
+    auto end = chrono::high_resolution_clock::now();
+    auto duration = chrono::duration_cast<chrono::milliseconds>(end - start);
+    cout << "Function call duration: " << duration.count() << " ms" << endl;
+
+    // 输出日志信息
+    cout << "MAC address: " << mac << endl;
 }
 
 // 运行程序: Ctrl + F5 或调试 >“开始执行(不调试)”菜单
diff --git a/WinDevice/WinDevice.vcxproj b/WinDevice/WinDevice.vcxproj
index 55d6b28..1b14dbb 100644
--- a/WinDevice/WinDevice.vcxproj
+++ b/WinDevice/WinDevice.vcxproj
@@ -88,6 +88,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>.;</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -102,6 +103,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>.;</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -116,6 +118,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>.;</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -130,6 +133,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>.;</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -139,8 +143,16 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="Audio\AudioManager.cpp" />
+    <ClCompile Include="Utils\SysInfoUtil.cpp" />
     <ClCompile Include="WinDevice.cpp" />
   </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Audio\AudioEnum.h" />
+    <ClInclude Include="Audio\AudioManager.h" />
+    <ClInclude Include="stdafx.h" />
+    <ClInclude Include="Utils\SysInfoUtil.h" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
diff --git a/WinDevice/stdafx.h b/WinDevice/stdafx.h
new file mode 100644
index 0000000..5208945
--- /dev/null
+++ b/WinDevice/stdafx.h
@@ -0,0 +1,8 @@
+
+#pragma once
+
+#include <windows.h>
+#include <winerror.h>
+#include <shlwapi.h>
+#include <Psapi.h>
+#include <Shellapi.h>
\ No newline at end of file