diff --git a/src/BD.WTTS.Client.Plugins.SteamIdleCard/UI/Views/Pages/IdleCardPage.axaml b/src/BD.WTTS.Client.Plugins.SteamIdleCard/UI/Views/Pages/IdleCardPage.axaml
index 62fa9e6432c..9ac9a0eb8fd 100644
--- a/src/BD.WTTS.Client.Plugins.SteamIdleCard/UI/Views/Pages/IdleCardPage.axaml
+++ b/src/BD.WTTS.Client.Plugins.SteamIdleCard/UI/Views/Pages/IdleCardPage.axaml
@@ -203,7 +203,10 @@
             </ComboBox>
 
             <TextBlock Text="最大并行挂时长游戏数量" Theme="{StaticResource CaptionTextBlockStyle}" />
-            <NumericUpDown Minimum="2" Value="{Binding Source={x:Static ms:SteamIdleSettings.MaxIdleCount}, Path=Value, Mode=TwoWay}" />
+            <NumericUpDown
+                Maximum="32"
+                Minimum="2"
+                Value="{Binding Source={x:Static ms:SteamIdleSettings.MaxIdleCount}, Path=Value, Mode=TwoWay}" />
             <TextBlock Text="快速切换游戏间隔时间(毫秒)" Theme="{StaticResource CaptionTextBlockStyle}" />
             <NumericUpDown Minimum="5000" Value="{Binding Source={x:Static ms:SteamIdleSettings.SwitchTime}, Path=Value, Mode=TwoWay}" />
             <TextBlock Text="游戏最小运行时间(小时)" Theme="{StaticResource CaptionTextBlockStyle}" />