diff --git a/src/components/BootstrapBlazor.Region/BootstrapBlazor.Region.csproj b/src/components/BootstrapBlazor.Region/BootstrapBlazor.Region.csproj
index 664f20b8..b8ef9ff5 100644
--- a/src/components/BootstrapBlazor.Region/BootstrapBlazor.Region.csproj
+++ b/src/components/BootstrapBlazor.Region/BootstrapBlazor.Region.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.0.0</Version>
+    <Version>9.0.1</Version>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectCity.razor b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor
new file mode 100644
index 00000000..31c3f8c8
--- /dev/null
+++ b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor
@@ -0,0 +1,32 @@
+@namespace BootstrapBlazor.Components
+@inherits SelectRegionBase
+@attribute [JSModuleAutoLoader("./_content/BootstrapBlazor.Region/Components/SelectRegion.razor.js")]
+
+@if (IsShowLabel)
+{
+    <BootstrapLabel required="@Required" for="@InputId" ShowLabelTooltip="ShowLabelTooltip" Value="@DisplayText" />
+}
+<div @attributes="AdditionalAttributes" id="@Id" class="@ClassString">
+    <div class="dropdown-toggle" data-bs-toggle="bb.dropdown" data-bs-placement="@PlacementString" data-bs-offset="@OffsetString" data-bs-custom-class="@CustomClassString">
+        <input type="text" id="@InputId" disabled="@Disabled" readonly placeholder="@PlaceHolder" class="@InputClassString" value="@CurrentValueAsString" />
+        <span class="@AppendClassString"><i class="@DropdownIcon"></i></span>
+    </div>
+    @if (!IsDisabled)
+    {
+        <span class="@ClearClassString" @onclick="OnClearValue"><i class="@ClearIcon"></i></span>
+    }
+    <div class="dropdown-menu">
+        @foreach (var item in GetProvinces())
+        {
+            <div class="bb-region-city-item">
+                <div class="bb-region-city-title" @onclick="() => OnSelectProvince(item)">@item</div>
+                <ul>
+                    @foreach (var city in GetCities(item))
+                    {
+                        <li class="@GetActiveClass(city)" @onclick="() => OnSelectCity(city)">@city</li>
+                    }
+                </ul>
+            </div>
+        }
+    </div>
+</div>
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.cs b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.cs
new file mode 100644
index 00000000..c4287977
--- /dev/null
+++ b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.cs
@@ -0,0 +1,142 @@
+// Copyright (c) BootstrapBlazor & Argo Zhang (argo@live.ca). All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Website: https://www.blazor.zone or https://argozhang.github.io/
+
+namespace BootstrapBlazor.Components;
+
+/// <summary>
+/// SelectCity 组件
+/// </summary>
+public partial class SelectCity
+{
+    /// <summary>
+    /// 获得/设置 是否可多选 默认 false 单选
+    /// </summary>
+    [Parameter]
+    public bool IsMultiple { get; set; }
+
+    private string? InputId => $"{Id}_input";
+
+    private string? ClassString => CssBuilder.Default("select bb-city")
+        .AddClass("disabled", IsDisabled)
+        .AddClassFromAttributes(AdditionalAttributes)
+        .Build();
+
+    private readonly HashSet<string> _values = [];
+
+    private string? GetActiveClass(string item) => _values.Contains(item) || CurrentValue == item ? "active" : null;
+
+    private async Task OnClearValue()
+    {
+        if (IsMultiple)
+        {
+            _values.Clear();
+        }
+        CurrentValue = "";
+
+        if (OnClearAsync != null)
+        {
+            await OnClearAsync();
+        }
+    }
+
+    private void OnSelectProvince(string province)
+    {
+        if (IsMultiple)
+        {
+            HashSet<string> cities;
+            if (province == "直辖市")
+            {
+                cities = Municipalities;
+            }
+            else if (province == "特别行政区")
+            {
+                cities = SpecialAdministrativeRegions;
+            }
+            else
+            {
+                cities = GetCities(province);
+            }
+            foreach (var city in cities)
+            {
+                if (!_values.Remove(city))
+                {
+                    _values.Add(city);
+                }
+            }
+            CurrentValue = string.Join(",", _values);
+        }
+    }
+
+    private void OnSelectCity(string item)
+    {
+        if (IsMultiple)
+        {
+            if (!_values.Remove(item))
+            {
+                _values.Add(item);
+            }
+            CurrentValue = string.Join(",", _values);
+        }
+        else
+        {
+            CurrentValue = item;
+        }
+    }
+
+    private static HashSet<string> GetProvinces()
+    {
+        return
+        [
+            "直辖市",
+            "河北省",
+            "山西省",
+            "辽宁省",
+            "吉林省",
+            "黑龙江省",
+            "江苏省",
+            "浙江省",
+            "安徽省",
+            "福建省",
+            "江西省",
+            "山东省",
+            "河南省",
+            "湖北省",
+            "湖南省",
+            "广东省",
+            "海南省",
+            "四川省",
+            "贵州省",
+            "云南省",
+            "陕西省",
+            "甘肃省",
+            "青海省",
+            "内蒙古自治区",
+            "广西壮族自治区",
+            "西藏自治区",
+            "宁夏回族自治区",
+            "新疆维吾尔自治区",
+            "台湾省",
+            "特别行政区"
+        ];
+    }
+
+    private static readonly HashSet<string> Municipalities = ["北京市", "天津市", "上海市", "重庆市"];
+
+    private static readonly HashSet<string> SpecialAdministrativeRegions = ["香港特别行政区", "澳门特别行政区"];
+
+    private HashSet<string> GetCities(string provinceName)
+    {
+        if (provinceName == "直辖市")
+        {
+            return Municipalities;
+        }
+
+        if (provinceName == "特别行政区")
+        {
+            return SpecialAdministrativeRegions;
+        }
+
+        return RegionService.GetCities(provinceName);
+    }
+}
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.css b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.css
new file mode 100644
index 00000000..9b99033f
--- /dev/null
+++ b/src/components/BootstrapBlazor.Region/Components/SelectCity.razor.css
@@ -0,0 +1,55 @@
+.bb-city {
+    position: relative;
+}
+
+    .bb-city:not(.disabled):hover .form-select-append {
+        display: none;
+    }
+
+.dropdown-menu {
+    --bs-dropdown-padding-y: .5rem;
+    --bs-dropdown-padding-x: .5rem;
+    max-width: 400px;
+    max-height: 400px;
+    overflow-y: auto;
+}
+
+    .dropdown-menu ul {
+        margin: 0;
+        padding: 0;
+        display: flex;
+        flex-wrap: wrap;
+        gap: 5px;
+    }
+
+    .dropdown-menu li {
+        list-style: none;
+        transition: background-color .3s linear, color .3s linear;
+        cursor: pointer;
+        padding: 3px 12px;
+        border-radius: var(--bs-border-radius);
+        color: #777;
+    }
+
+        .dropdown-menu li:hover {
+            background-color: #e9ecef;
+            color: #000;
+        }
+
+        .dropdown-menu li.active {
+            background-color: #e3e3e3;
+            color: #000;
+        }
+
+.bb-region-city-item:not(:last-child) {
+    margin-bottom: 3px;
+    padding-bottom: 3px;
+    border-bottom: 1px solid var(--bs-border-color);
+}
+
+.bb-region-city-title {
+    padding: 3px 12px;
+    color: #000;
+    font-weight: bold;
+    cursor: pointer;
+}
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor
index e6759b13..fba41d09 100644
--- a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor
+++ b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor
@@ -1,5 +1,5 @@
 @namespace BootstrapBlazor.Components
-@inherits PopoverSelectBase<string>
+@inherits SelectRegionBase
 @attribute [JSModuleAutoLoader("./_content/BootstrapBlazor.Region/Components/SelectRegion.razor.js")]
 
 @if (IsShowLabel)
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.cs b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.cs
index ee63e0e2..de778f56 100644
--- a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.cs
+++ b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.cs
@@ -9,75 +9,13 @@ namespace BootstrapBlazor.Components;
 /// </summary>
 public partial class SelectRegion
 {
-    /// <summary>
-    /// Gets or sets the placeholder text.
-    /// </summary>
-    [Parameter]
-    public string? PlaceHolder { get; set; }
-
-    /// <summary>
-    /// Gets or sets the color. The default is <see cref="Color.None"/> (no color).
-    /// </summary>
-    [Parameter]
-    public Color Color { get; set; }
-
-    /// <summary>
-    /// Gets or sets the dropdown icon. The default is "fa-solid fa-angle-up".
-    /// </summary>
-    [Parameter]
-    [NotNull]
-    public string? DropdownIcon { get; set; }
-
-    /// <summary>
-    /// Gets or sets the callback method when the clear button is clicked. Default is null.
-    /// </summary>
-    [Parameter]
-    public Func<Task>? OnClearAsync { get; set; }
-
-    /// <summary>
-    /// Gets or sets the right-side clear icon. Default is fa-solid fa-angle-up.
-    /// </summary>
-    [Parameter]
-    [NotNull]
-    public string? ClearIcon { get; set; }
-
-    /// <summary>
-    /// Gets or sets the <see cref="IIconTheme"/> service instance.
-    /// </summary>
-    [Inject]
-    [NotNull]
-    private IIconTheme? IconTheme { get; set; }
-
-    [Inject]
-    [NotNull]
-    private IRegionService? RegionService { get; set; }
+    private string? InputId => $"{Id}_input";
 
     private string? ClassString => CssBuilder.Default("select bb-region")
         .AddClass("disabled", IsDisabled)
         .AddClassFromAttributes(AdditionalAttributes)
         .Build();
 
-    private string? InputId => $"{Id}_input";
-
-    private string? InputClassString => CssBuilder.Default("form-select form-control")
-        .AddClass($"border-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
-        .AddClass($"border-success", IsValid.HasValue && IsValid.Value)
-        .AddClass($"border-danger", IsValid.HasValue && !IsValid.Value)
-        .AddClass(CssClass).AddClass(ValidCss)
-        .Build();
-
-    private string? AppendClassString => CssBuilder.Default("form-select-append")
-        .AddClass($"text-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
-        .AddClass($"text-success", IsValid.HasValue && IsValid.Value)
-        .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
-        .Build();
-
-    private string? ClearClassString => CssBuilder.Default("clear-icon")
-        .AddClass($"text-{Color.ToDescriptionString()}", Color != Color.None)
-        .AddClass($"text-success", IsValid.HasValue && IsValid.Value)
-        .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
-        .Build();
-
     private string? GetHeaderActiveClass(RegionViewMode type) => _currentViewMode == type ? "active" : null;
 
     private string? GetBodyActiveClass(RegionViewMode type) => CssBuilder.Default("bb-region-body-item")
@@ -109,9 +47,6 @@ protected override void OnParametersSet()
     {
         base.OnParametersSet();
 
-        DropdownIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectDropdownIcon);
-        ClearIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectClearIcon);
-
         ResetValue();
     }
 
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.css b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.css
index bc73d85a..978fceb8 100644
--- a/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.css
+++ b/src/components/BootstrapBlazor.Region/Components/SelectRegion.razor.css
@@ -6,19 +6,19 @@
         display: none;
     }
 
-.popover-region .dropdown-menu {
+.dropdown-menu {
     --bs-dropdown-padding-y: 0;
 }
 
-.popover-region ul {
-    margin: 0;
-    padding: 0;
-}
+    .dropdown-menu ul {
+        margin: 0;
+        padding: 0;
+    }
 
-.popover-region li {
-    list-style: none;
-    transition: background-color .3s linear, color .3s linear;
-}
+    .dropdown-menu li {
+        list-style: none;
+        transition: background-color .3s linear, color .3s linear;
+    }
 
 .bb-region-header {
     width: 400px;
diff --git a/src/components/BootstrapBlazor.Region/Components/SelectRegionBase.cs b/src/components/BootstrapBlazor.Region/Components/SelectRegionBase.cs
new file mode 100644
index 00000000..3aa2f320
--- /dev/null
+++ b/src/components/BootstrapBlazor.Region/Components/SelectRegionBase.cs
@@ -0,0 +1,96 @@
+// Copyright (c) BootstrapBlazor & Argo Zhang (argo@live.ca). All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// Website: https://www.blazor.zone or https://argozhang.github.io/
+
+namespace BootstrapBlazor.Components;
+
+/// <summary>
+/// SelectRegion 组件基类
+/// </summary>
+public abstract class SelectRegionBase : PopoverSelectBase<string>
+{
+    /// <summary>
+    /// Gets or sets the placeholder text.
+    /// </summary>
+    [Parameter]
+    public string? PlaceHolder { get; set; }
+
+    /// <summary>
+    /// Gets or sets the color. The default is <see cref="Color.None"/> (no color).
+    /// </summary>
+    [Parameter]
+    public Color Color { get; set; }
+
+    /// <summary>
+    /// Gets or sets the dropdown icon. The default is "fa-solid fa-angle-up".
+    /// </summary>
+    [Parameter]
+    [NotNull]
+    public string? DropdownIcon { get; set; }
+
+    /// <summary>
+    /// Gets or sets the callback method when the clear button is clicked. Default is null.
+    /// </summary>
+    [Parameter]
+    public Func<Task>? OnClearAsync { get; set; }
+
+    /// <summary>
+    /// Gets or sets the right-side clear icon. Default is fa-solid fa-angle-up.
+    /// </summary>
+    [Parameter]
+    [NotNull]
+    public string? ClearIcon { get; set; }
+
+    /// <summary>
+    /// Gets or sets the <see cref="IIconTheme"/> service instance.
+    /// </summary>
+    [Inject]
+    [NotNull]
+    protected IIconTheme? IconTheme { get; set; }
+
+    /// <summary>
+    /// <see cref="IRegionService"/> service instance
+    /// </summary>
+    [Inject]
+    [NotNull]
+    protected IRegionService? RegionService { get; set; }
+
+    /// <summary>
+    /// 文本框样式
+    /// </summary>
+    protected string? InputClassString => CssBuilder.Default("form-select form-control")
+        .AddClass($"border-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
+        .AddClass($"border-success", IsValid.HasValue && IsValid.Value)
+        .AddClass($"border-danger", IsValid.HasValue && !IsValid.Value)
+        .AddClass(CssClass).AddClass(ValidCss)
+        .Build();
+
+    /// <summary>
+    /// 下拉框按钮样式
+    /// </summary>
+    protected string? AppendClassString => CssBuilder.Default("form-select-append")
+        .AddClass($"text-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
+        .AddClass($"text-success", IsValid.HasValue && IsValid.Value)
+        .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
+        .Build();
+
+    /// <summary>
+    /// 清空按钮样式
+    /// </summary>
+    protected string? ClearClassString => CssBuilder.Default("clear-icon")
+        .AddClass($"text-{Color.ToDescriptionString()}", Color != Color.None)
+        .AddClass($"text-success", IsValid.HasValue && IsValid.Value)
+        .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
+        .Build();
+
+    /// <summary>
+    /// <inheritdoc/>
+    /// </summary>
+    protected override void OnParametersSet()
+    {
+        base.OnParametersSet();
+
+        DropdownIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectDropdownIcon);
+        ClearIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectClearIcon);
+    }
+}