diff --git a/HJGL_ZH/WebAPI/WebAPI.csproj b/HJGL_ZH/WebAPI/WebAPI.csproj
index 22b8cbb..eda7661 100644
--- a/HJGL_ZH/WebAPI/WebAPI.csproj
+++ b/HJGL_ZH/WebAPI/WebAPI.csproj
@@ -14,7 +14,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>WebAPI</RootNamespace>
     <AssemblyName>WebAPI</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
@@ -52,14 +52,12 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Data.Linq" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web" />
     <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Routing" />
@@ -110,7 +108,6 @@
       <Private>True</Private>
       <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.4\lib\net45\System.Web.WebPages.Razor.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq" />
     <Reference Include="WebGrease">
       <Private>True</Private>
       <HintPath>..\packages\WebGrease.1.6.0\lib\WebGrease.dll</HintPath>