diff --git a/build/Versions.props b/build/Versions.props
index 6e71cb77d..82484d8df 100644
--- a/build/Versions.props
+++ b/build/Versions.props
@@ -1,6 +1,6 @@
 <Project>
     <PropertyGroup>
         <AvaloniaVersion>12.1.1</AvaloniaVersion>
-        <AtomUIVersion>6.1.3</AtomUIVersion>
+        <AtomUIVersion>6.1.4</AtomUIVersion>
     </PropertyGroup>
 </Project>
diff --git a/docs/controls/desktop/navigation/combo-box/changelog.md b/docs/controls/desktop/navigation/combo-box/changelog.md
index b72b85b9a..5aa94a96f 100644
--- a/docs/controls/desktop/navigation/combo-box/changelog.md
+++ b/docs/controls/desktop/navigation/combo-box/changelog.md
@@ -2,6 +2,11 @@
 
 本文档记录 ComboBox 控件级设计、API、主题契约、Token 和实现结构的变化。它不替代仓库根目录 `CHANGELOG.md`，也不作为正式版本发布说明。
 
+## 2026-08-18
+
+- Behavior
+  - Keep keyboard input on a non-editable ComboBox when reopening its popup so consecutive `Down` and `Enter` selections continue to update the selected item.
+
 ## 2026-07-05
 
 - Behavior
diff --git a/src/AtomUI.Desktop.Controls/ComboBox/ComboBox.cs b/src/AtomUI.Desktop.Controls/ComboBox/ComboBox.cs
index 193b66e2b..97b196125 100644
--- a/src/AtomUI.Desktop.Controls/ComboBox/ComboBox.cs
+++ b/src/AtomUI.Desktop.Controls/ComboBox/ComboBox.cs
@@ -910,7 +910,16 @@ public class ComboBox : AvaloniaComboBox,
     private void HandlePopupOpened(object? sender, EventArgs e)
     {
         RefreshFilteredItemVisibility();
-        FocusEditableTextBox(NavigationMethod.Unspecified);
+
+        if (IsEditable)
+        {
+            FocusEditableTextBox(NavigationMethod.Unspecified);
+        }
+        else if (TopLevel.GetTopLevel(this)?.FocusManager.GetFocusedElement() is Visual focusedVisual &&
+                 _popup?.IsInsidePopup(focusedVisual) == true)
+        {
+            Focus(NavigationMethod.Unspecified);
+        }
     }
 
     private void HandleEditableTextBoxTextInput(TextInputEventArgs e)
diff --git a/tests/AtomUI.Desktop.Controls.Tests/ComboBox/ComboBoxKeyboardNavigationTests.cs b/tests/AtomUI.Desktop.Controls.Tests/ComboBox/ComboBoxKeyboardNavigationTests.cs
new file mode 100644
index 000000000..80f86be4b
--- /dev/null
+++ b/tests/AtomUI.Desktop.Controls.Tests/ComboBox/ComboBoxKeyboardNavigationTests.cs
@@ -0,0 +1,128 @@
+using System.Reflection;
+using AtomUI.Controls;
+using AtomUI.Controls.Primitives;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Headless;
+using Avalonia.Input;
+using Avalonia.Threading;
+using Shouldly;
+using Xunit;
+using AvaloniaWindow = Avalonia.Controls.Window;
+using AtomUIComboBox = AtomUI.Desktop.Controls.ComboBox;
+
+namespace AtomUI.Desktop.Controls.Tests.ComboBox;
+
+public class ComboBoxKeyboardNavigationTests
+{
+    static ComboBoxKeyboardNavigationTests()
+    {
+        AvaloniaTestApp.EnsureInitialized();
+    }
+
+    [Fact]
+    public void NonEditable_ComboBox_Allows_Consecutive_Keyboard_Selections()
+    {
+        var comboBox = new AtomUIComboBox
+        {
+            Width           = 240,
+            ItemsSource     = new[] { "Alpha", "Beta", "Gamma" },
+            IsMotionEnabled = false
+        };
+
+        ShowInWindow(comboBox, window =>
+        {
+            comboBox.Focus(NavigationMethod.Tab).ShouldBeTrue();
+            Dispatcher.UIThread.RunJobs();
+
+            SelectNextItem(window, comboBox, 0);
+
+            comboBox.Focus(NavigationMethod.Tab).ShouldBeTrue();
+            comboBox.IsDropDownOpen = true;
+            Dispatcher.UIThread.RunJobs();
+
+            TopLevel.GetTopLevel(comboBox)?.FocusManager.GetFocusedElement()
+                    .ShouldBeSameAs(comboBox);
+
+            PressKey(window, Key.Down, PhysicalKey.ArrowDown);
+            Dispatcher.UIThread.RunJobs();
+            PressKey(window, Key.Enter, PhysicalKey.Enter);
+            Dispatcher.UIThread.RunJobs();
+
+            comboBox.SelectedIndex.ShouldBe(1);
+            comboBox.IsDropDownOpen.ShouldBeFalse();
+        });
+    }
+
+    private static void SelectNextItem(AvaloniaWindow window, AtomUIComboBox comboBox, int expectedIndex)
+    {
+        comboBox.IsDropDownOpen = true;
+        Dispatcher.UIThread.RunJobs();
+
+        PressKey(window, Key.Down, PhysicalKey.ArrowDown);
+        Dispatcher.UIThread.RunJobs();
+        PressKey(window, Key.Enter, PhysicalKey.Enter);
+        Dispatcher.UIThread.RunJobs();
+
+        comboBox.SelectedIndex.ShouldBe(expectedIndex);
+        comboBox.IsDropDownOpen.ShouldBeFalse();
+    }
+
+    private static void PressKey(AvaloniaWindow window, Key key, PhysicalKey physicalKey)
+    {
+        window.KeyPress(key, RawInputModifiers.None, physicalKey, null);
+    }
+
+    private static void ShowInWindow(Control content, Action<AvaloniaWindow> assertion)
+    {
+        var window = new AvaloniaWindow
+        {
+            Width   = 360,
+            Height  = 220,
+            Content = CreatePopupOverlayHost(content)
+        };
+
+        try
+        {
+            window.Show();
+            Dispatcher.UIThread.RunJobs();
+            content.ApplyTemplate();
+            content.Measure(Size.Infinity);
+            content.Arrange(new Rect(content.DesiredSize));
+            Dispatcher.UIThread.RunJobs();
+            assertion(window);
+        }
+        finally
+        {
+            window.Close();
+        }
+    }
+
+    private static VisualLayerManager CreatePopupOverlayHost(Control content)
+    {
+        var overlayPanel = new ScopeAwareOverlayLayerPanel
+        {
+            Width  = 360,
+            Height = 220
+        };
+        overlayPanel.Children.Add(content);
+
+        var visualLayerManager = new VisualLayerManager
+        {
+            Child = overlayPanel
+        };
+        EnablePopupOverlayLayer(visualLayerManager);
+        return visualLayerManager;
+    }
+
+    private static void EnablePopupOverlayLayer(VisualLayerManager visualLayerManager)
+    {
+        var property = typeof(VisualLayerManager).GetProperty(
+            "EnablePopupOverlayLayer",
+            BindingFlags.Instance | BindingFlags.NonPublic);
+
+        property.ShouldNotBeNull();
+        property.SetValue(visualLayerManager, true);
+    }
+}