diff --git a/WinFormsApp1/WinFormsApp1.csproj b/WinFormsApp1/WinFormsApp1.csproj
index a781f65..c762826 100644
--- a/WinFormsApp1/WinFormsApp1.csproj
+++ b/WinFormsApp1/WinFormsApp1.csproj
@@ -6,6 +6,7 @@
     <UseWindowsForms>true</UseWindowsForms>
     <AssemblyName>ExcelMerger</AssemblyName>
     <RootNamespace>ExcelMerger</RootNamespace>
+    <ApplicationIcon>app.ico</ApplicationIcon>
     <!-- 用于单文件发布的配置 -->
     <PublishSingleFile>false</PublishSingleFile>
     <SelfContained>false</SelfContained>