diff --git a/src/BootstrapBlazor/Components/Input/BootstrapInput.razor b/src/BootstrapBlazor/Components/Input/BootstrapInput.razor
index 7318a3725ad8f3437c5ace9a8ec9cb1034243ac5..5903856df74dcbc5b5578a144c82099f8b863345 100644
--- a/src/BootstrapBlazor/Components/Input/BootstrapInput.razor
+++ b/src/BootstrapBlazor/Components/Input/BootstrapInput.razor
@@ -7,7 +7,7 @@
     <label class="form-label" required="@Required" for="@Id">@DisplayText</label>
 }
 
-<input @attributes="@AdditionalAttributes" type="@Type" placeholder="@PlaceHolder" id="@Id" class="@ClassName" disabled="@Disabled" @bind-value="CurrentValueAsString" @bind-value:event="onchange" @ref="FocusElement" />
+<input @attributes="@AdditionalAttributes" type="@Type" placeholder="@PlaceHolder" id="@Id" readonly="@ReadonlyString" class="@ClassName" disabled="@Disabled" @bind-value="CurrentValueAsString" @bind-value:event="onchange" @ref="FocusElement" />
 
 <CascadingValue Value="this" IsFixed="true">
     @ChildContent
diff --git a/src/BootstrapBlazor/Components/Input/BootstrapInput.razor.cs b/src/BootstrapBlazor/Components/Input/BootstrapInput.razor.cs
index e9dc3d9dd3c3c023d6d7ec92984876b3322be69d..6f383ff939b7e70ba0d44e3e233e3ddb70aad1fc 100644
--- a/src/BootstrapBlazor/Components/Input/BootstrapInput.razor.cs
+++ b/src/BootstrapBlazor/Components/Input/BootstrapInput.razor.cs
@@ -5,18 +5,25 @@
 using Microsoft.AspNetCore.Components;
 using System;
 
-namespace BootstrapBlazor.Components
+namespace BootstrapBlazor.Components;
+
+/// <summary>
+/// BootstrapInputTextBase 组件
+/// </summary>
+public partial class BootstrapInput<TValue>
 {
     /// <summary>
-    /// BootstrapInputTextBase 组件
+    /// 获得/设置 是否为 Input-Group 组合中的 input 组件 默认 false
     /// </summary>
-    public partial class BootstrapInput<TValue>
-    {
-        /// <summary>
-        /// 获得/设置 是否为 Input-Group 组合中的 input 组件 默认 false
-        /// </summary>
-        [Parameter]
-        [Obsolete($"已弃用，请改用 {nameof(BootstrapInputGroup)} 组件支持更多功能")]
-        public bool IsGroup { get; set; }
-    }
+    [Parameter]
+    [Obsolete($"已弃用，请改用 {nameof(BootstrapInputGroup)} 组件支持更多功能")]
+    public bool IsGroup { get; set; }
+
+    /// <summary>
+    /// 获得/设置 是否为只读 默认 false
+    /// </summary>
+    [Parameter]
+    public bool Readonly { get; set; }
+
+    private string? ReadonlyString => Readonly ? "true" : null;
 }