diff --git a/QCloudCSharpSDK/COSXML/COSXML.csproj b/QCloudCSharpSDK/COSXML/COSXML.csproj
index 8623e94..55d8bd9 100644
--- a/QCloudCSharpSDK/COSXML/COSXML.csproj
+++ b/QCloudCSharpSDK/COSXML/COSXML.csproj
@@ -9,7 +9,7 @@
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>COSXML</RootNamespace>
-    <AssemblyName>COSXML</AssemblyName>
+    <AssemblyName>COSXML-Compatible</AssemblyName>
     <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
   </PropertyGroup>
@@ -251,4 +251,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/README.md b/README.md
index eef3b58..87f9c4a 100644
--- a/README.md
+++ b/README.md
@@ -20,12 +20,12 @@ dotnet add package Tencent.QCloud.Cos.Sdk
 
 如果是用于目标框架 .Net Framework 4.0 及以下版本的开发，
 
-请使用 [Releases](https://github.com/tencentyun/qcloud-sdk-dotnet/releases) 下载的COSXML.dll文件
+请使用 [Releases](https://github.com/tencentyun/qcloud-sdk-dotnet/releases) 下载的COSXML-Compatible.dll文件
 
 在Visual Studio项目中选择 
 
 ```
-项目 -> 添加引用 -> 浏览 -> COSXML.dll 的方式添加C# SDK
+项目 -> 添加引用 -> 浏览 -> COSXML-Compatible.dll 的方式添加C# SDK
 ```
 
 您也可以在 [Releases 里面](https://github.com/tencentyun/qcloud-sdk-dotnet/releases) 手动下载我们的SDK。