diff --git a/MilvusDemo/Program.cs b/MilvusDemo/Program.cs
index e83b03c..267052f 100644
--- a/MilvusDemo/Program.cs
+++ b/MilvusDemo/Program.cs
@@ -27,6 +27,7 @@ namespace MilvusDemo
         static async Task RunActualMilvusOperations()
         {
             // 初始化MilvusService
+            const string password = "123456789";
             const string host = "localhost";
             const int port = 19530;
             const string collectionName = "csharp_demo_collection";