diff --git a/.github/workflows/publish-beta.yml b/.github/workflows/publish-beta.yml
index 611db19..489a8dc 100644
--- a/.github/workflows/publish-beta.yml
+++ b/.github/workflows/publish-beta.yml
@@ -17,7 +17,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v2
       with:
-        dotnet-version: 7.0.x
+        dotnet-version: 8.0.x
     - name: Restore
       run: |
         dotnet restore SmartA2/SmartA2.csproj
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5319e58..60bc733 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v2
       with:
-        dotnet-version: 7.0.x
+        dotnet-version: 8.0.x
     - name: Build
       run: dotnet build -c Release
     - name: Test
diff --git a/Readme.MD b/Readme.MD
index 3a42e70..14e9d31 100644
--- a/Readme.MD
+++ b/Readme.MD
@@ -13,7 +13,7 @@ Nuget：SmartA2
 
 
 ## 新生命项目矩阵
-各项目默认支持net7.0/netstandard2.1/netstandard2.0/net4.61，旧版（2022.1225）支持net4.5/net4.0/net2.0  
+各项目默认支持net8.0/net7.0/netstandard2.1/netstandard2.0/net4.61，旧版（2022.1225）支持net4.5/net4.0/net2.0  
 
 |                               项目                               | 年份  | 说明                                                                                   |
 | :--------------------------------------------------------------: | :---: | -------------------------------------------------------------------------------------- |
diff --git a/Samples/BuzzerTest/BuzzerTest.csproj b/Samples/BuzzerTest/BuzzerTest.csproj
index 62c0a75..397ee3c 100644
--- a/Samples/BuzzerTest/BuzzerTest.csproj
+++ b/Samples/BuzzerTest/BuzzerTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/DatabaseTest/DatabaseTest.csproj b/Samples/DatabaseTest/DatabaseTest.csproj
index 62bcd22..343dfba 100644
--- a/Samples/DatabaseTest/DatabaseTest.csproj
+++ b/Samples/DatabaseTest/DatabaseTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/KeyTest/KeyTest.csproj b/Samples/KeyTest/KeyTest.csproj
index fd3f49b..9459a00 100644
--- a/Samples/KeyTest/KeyTest.csproj
+++ b/Samples/KeyTest/KeyTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/LedTest/LedTest.csproj b/Samples/LedTest/LedTest.csproj
index 340b958..88ce41b 100644
--- a/Samples/LedTest/LedTest.csproj
+++ b/Samples/LedTest/LedTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/NetClientTest/NetClientTest.csproj b/Samples/NetClientTest/NetClientTest.csproj
index a307fdd..30875df 100644
--- a/Samples/NetClientTest/NetClientTest.csproj
+++ b/Samples/NetClientTest/NetClientTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/NetServerTest/NetServerTest.csproj b/Samples/NetServerTest/NetServerTest.csproj
index 6d3003d..4bd68e4 100644
--- a/Samples/NetServerTest/NetServerTest.csproj
+++ b/Samples/NetServerTest/NetServerTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/Serial2NetClientTest/Serial2NetClientTest.csproj b/Samples/Serial2NetClientTest/Serial2NetClientTest.csproj
index 11ea5b9..9607e77 100644
--- a/Samples/Serial2NetClientTest/Serial2NetClientTest.csproj
+++ b/Samples/Serial2NetClientTest/Serial2NetClientTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/Serial2NetServerTest/Serial2NetServerTest.csproj b/Samples/Serial2NetServerTest/Serial2NetServerTest.csproj
index 55a8f17..8177eb5 100644
--- a/Samples/Serial2NetServerTest/Serial2NetServerTest.csproj
+++ b/Samples/Serial2NetServerTest/Serial2NetServerTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/SerialTest/SerialTest.csproj b/Samples/SerialTest/SerialTest.csproj
index f89adb3..d90e501 100644
--- a/Samples/SerialTest/SerialTest.csproj
+++ b/Samples/SerialTest/SerialTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Samples/UsbPowerTest/UsbPowerTest.csproj b/Samples/UsbPowerTest/UsbPowerTest.csproj
index a7aa338..17f4497 100644
--- a/Samples/UsbPowerTest/UsbPowerTest.csproj
+++ b/Samples/UsbPowerTest/UsbPowerTest.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Company>新生命开发团队</Company>
     <Copyright>©2002-2023 新生命开发团队</Copyright>
     <VersionPrefix>1.0</VersionPrefix>
diff --git a/Test/Test.csproj b/Test/Test.csproj
index 728c42a..c00fda3 100644
--- a/Test/Test.csproj
+++ b/Test/Test.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <OutputPath>..\Bin\Test</OutputPath>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <ImplicitUsings>enable</ImplicitUsings>
diff --git a/XUnitTest/XUnitTest.csproj b/XUnitTest/XUnitTest.csproj
index e086d1f..0bbc4d9 100644
--- a/XUnitTest/XUnitTest.csproj
+++ b/XUnitTest/XUnitTest.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <OutputPath>..\Bin\UnitTest</OutputPath>
     <ImplicitUsings>enable</ImplicitUsings>
     <!--<Nullable>enable</Nullable>-->