diff --git a/PackagingMallShipper/PackagingMallShipper.csproj b/PackagingMallShipper/PackagingMallShipper.csproj
index 1044175..614bb01 100644
--- a/PackagingMallShipper/PackagingMallShipper.csproj
+++ b/PackagingMallShipper/PackagingMallShipper.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net48</TargetFramework>
+    <TargetFramework>net462</TargetFramework>
     <RootNamespace>PackagingMallShipper</RootNamespace>
     <AssemblyName>PackagingMallShipper</AssemblyName>
     <UseWPF>true</UseWPF>
diff --git a/setup.iss b/setup.iss
index 4f1ae19..2cb3654 100644
--- a/setup.iss
+++ b/setup.iss
@@ -45,8 +45,8 @@ Source: "publish\PackagingMallShipper.exe.config"; DestDir: "{app}"; Flags: igno
 ; SQLite 本地库
 Source: "publish\x64\SQLite.Interop.dll"; DestDir: "{app}\x64"; Flags: ignoreversion
 Source: "publish\x86\SQLite.Interop.dll"; DestDir: "{app}\x86"; Flags: ignoreversion
-; .NET Framework 4.8 离线安装包（可选，取消注释以包含）
-; Source: "redist\ndp48-x86-x64-allos-enu.exe"; DestDir: "{tmp}"; Flags: deleteafterinstall; Check: not IsDotNetInstalled
+; .NET Framework 4.6.2 离线安装包（可选，取消注释以包含）
+; Source: "redist\NDP462-KB3151800-x86-x64-AllOS-ENU.exe"; DestDir: "{tmp}"; Flags: deleteafterinstall; Check: not IsDotNetInstalled
 
 [Icons]
 Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"
@@ -58,16 +58,16 @@ Name: "{autodesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: de
 Filename: "{app}\{#MyAppExeName}"; Description: "运行 {#MyAppName}"; Flags: nowait postinstall skipifsilent
 
 [Code]
-// 检查 .NET Framework 4.8 是否已安装
+// 检查 .NET Framework 4.6.2 是否已安装
 function IsDotNetInstalled: Boolean;
 var
   Release: Cardinal;
 begin
   Result := False;
-  // .NET Framework 4.8 的 Release 值为 528040 或更高
+  // .NET Framework 4.6.2 的 Release 值为 394802 或更高
   if RegQueryDWordValue(HKLM, 'SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full', 'Release', Release) then
   begin
-    Result := (Release >= 528040);
+    Result := (Release >= 394802);
   end;
 end;
 
@@ -113,18 +113,18 @@ begin
   begin
     NetVersion := GetDotNetVersionStr;
 
-    if MsgBox('此程序需要 .NET Framework 4.8 才能运行。' + #13#10 + #13#10 +
+    if MsgBox('此程序需要 .NET Framework 4.6.2 才能运行。' + #13#10 + #13#10 +
               '当前检测到的版本: ' + NetVersion + #13#10 + #13#10 +
-              '是否要打开微软官网下载 .NET Framework 4.8？' + #13#10 +
+              '是否要打开微软官网下载 .NET Framework 4.6.2？' + #13#10 +
               '（下载完成后请先安装运行时，再重新运行此安装程序）',
               mbConfirmation, MB_YESNO) = IDYES then
     begin
-      // 打开 .NET Framework 4.8 下载页面
-      ShellExec('open', 'https://dotnet.microsoft.com/download/dotnet-framework/net48', '', '', SW_SHOW, ewNoWait, ErrorCode);
+      // 打开 .NET Framework 4.6.2 下载页面
+      ShellExec('open', 'https://dotnet.microsoft.com/download/dotnet-framework/net462', '', '', SW_SHOW, ewNoWait, ErrorCode);
     end;
 
     Result := MsgBox('是否仍要继续安装？' + #13#10 + #13#10 +
-                     '注意：如果没有安装 .NET Framework 4.8，程序将无法运行。',
+                     '注意：如果没有安装 .NET Framework 4.6.2，程序将无法运行。',
                      mbConfirmation, MB_YESNO) = IDYES;
   end;
 end;