diff --git a/DMS.Core/Interfaces/IExcelService.cs b/DMS.Core/Interfaces/IExcelService.cs
new file mode 100644
index 0000000..a4d185e
--- /dev/null
+++ b/DMS.Core/Interfaces/IExcelService.cs
@@ -0,0 +1,14 @@
+using DMS.Core.Models;
+
+namespace DMS.Infrastructure.Services;
+
+public interface IExcelService
+{
+    /// <summary>
+    ///  从博途的变量表中导如变量
+    /// </summary>
+    /// <param name="excelFilePath"></param>
+    /// <returns></returns>
+    /// <exception cref="AggregateException"></exception>
+    List<Variable> ImprotFromTiaVariableTable(string excelFilePath);
+}
\ No newline at end of file
diff --git a/DMS.Infrastructure/Services/ExcelService.cs b/DMS.Infrastructure/Services/ExcelService.cs
new file mode 100644
index 0000000..170da54
--- /dev/null
+++ b/DMS.Infrastructure/Services/ExcelService.cs
@@ -0,0 +1,6 @@
+namespace DMS.Infrastructure.Services;
+
+public class ExcelService
+{
+    
+}
\ No newline at end of file