diff --git a/Cardiopulmonarybypasssystems/ViewModels/StartupPasswordViewModel.cs b/Cardiopulmonarybypasssystems/ViewModels/StartupPasswordViewModel.cs
index 0949de4..f535377 100644
--- a/Cardiopulmonarybypasssystems/ViewModels/StartupPasswordViewModel.cs
+++ b/Cardiopulmonarybypasssystems/ViewModels/StartupPasswordViewModel.cs
@@ -44,7 +44,7 @@ public partial class StartupPasswordViewModel : ObservableObject
     private string remainingText = "--";
 
     [ObservableProperty]
-    private string footerHint = "规则：第 1 个密码 15 天，第 2 个密码 30 天，第二次到期后自动永久有效。";
+    private string footerHint = "规则：先使用 20 天，提前 3 天提醒；满 20 天输入密码后再使用 30 天，提前 3 天再次提醒。";
 
     [ObservableProperty]
     private bool canSubmit;