diff --git a/YD_Event.Application/Client/Dtos/MyDtos.cs b/YD_Event.Application/Client/Dtos/MyDtos.cs
index 2c4d568..ef0a8c8 100644
--- a/YD_Event.Application/Client/Dtos/MyDtos.cs
+++ b/YD_Event.Application/Client/Dtos/MyDtos.cs
@@ -601,6 +601,19 @@ public class MyRegistrationDto
     public string ProjectNames { get; set; }
 }
 
+/// <summary>
+/// 更新头像URL输入
+/// </summary>
+public class UpdateAvatarUrlInput
+{
+    /// <summary>
+    /// 头像图片URL
+    /// </summary>
+    [Required(ErrorMessage = "头像URL不能为空")]
+    [MaxLength(500, ErrorMessage = "头像URL不能超过500个字符")]
+    public string AvatarUrl { get; set; } = string.Empty;
+}
+
 /// <summary>
 /// 更新头像输出
 /// </summary>
diff --git a/YD_Event.Application/Client/MyController.cs b/YD_Event.Application/Client/MyController.cs
index 1245397..1c91865 100644
--- a/YD_Event.Application/Client/MyController.cs
+++ b/YD_Event.Application/Client/MyController.cs
@@ -721,19 +721,14 @@ public class MyController : IDynamicApiController
     /// <summary>
     /// 更新头像 - 使用图片URL
     /// </summary>
-    /// <param name="avatarUrl">头像图片URL</param>
+    /// <param name="input">头像URL输入</param>
     /// <returns>更新后的头像信息</returns>
     [HttpPost("avatar/url")]
     [DisplayName("更新头像URL")]
-    public async Task<UpdateAvatarOutput> UpdateAvatarByUrl([FromBody] string avatarUrl)
+    public async Task<UpdateAvatarOutput> UpdateAvatarByUrl([FromBody] UpdateAvatarUrlInput input)
     {
-        if (string.IsNullOrWhiteSpace(avatarUrl))
-        {
-            throw Oops.Bah("头像URL不能为空");
-        }
-
         // 验证URL格式
-        if (!Uri.TryCreate(avatarUrl, UriKind.Absolute, out _))
+        if (!Uri.TryCreate(input.AvatarUrl, UriKind.Absolute, out _))
         {
             throw Oops.Bah("头像URL格式不正确");
         }
@@ -746,13 +741,13 @@ public class MyController : IDynamicApiController
             throw Oops.Bah("用户信息不存在");
         }
 
-        user.Avatar = avatarUrl;
+        user.Avatar = input.AvatarUrl;
         user.UpdatedTime = DateTime.Now;
         await _appUserRepository.UpdateAsync(user);
 
         return new UpdateAvatarOutput
         {
-            AvatarUrl = avatarUrl
+            AvatarUrl = input.AvatarUrl
         };
     }
 
diff --git a/YD_Event.Application/YD_Event.Application.xml b/YD_Event.Application/YD_Event.Application.xml
index 380b51f..2a507fc 100644
--- a/YD_Event.Application/YD_Event.Application.xml
+++ b/YD_Event.Application/YD_Event.Application.xml
@@ -3482,6 +3482,16 @@
             报名项目集合
             </summary>
         </member>
+        <member name="T:YD_Event.Application.Client.Dtos.UpdateAvatarUrlInput">
+            <summary>
+            更新头像URL输入
+            </summary>
+        </member>
+        <member name="P:YD_Event.Application.Client.Dtos.UpdateAvatarUrlInput.AvatarUrl">
+            <summary>
+            头像图片URL
+            </summary>
+        </member>
         <member name="T:YD_Event.Application.Client.Dtos.UpdateAvatarOutput">
             <summary>
             更新头像输出
@@ -3810,11 +3820,11 @@
             <param name="file">头像图片文件</param>
             <returns>更新后的头像信息</returns>
         </member>
-        <member name="M:YD_Event.Application.Client.MyController.UpdateAvatarByUrl(System.String)">
+        <member name="M:YD_Event.Application.Client.MyController.UpdateAvatarByUrl(YD_Event.Application.Client.Dtos.UpdateAvatarUrlInput)">
             <summary>
             更新头像 - 使用图片URL
             </summary>
-            <param name="avatarUrl">头像图片URL</param>
+            <param name="input">头像URL输入</param>
             <returns>更新后的头像信息</returns>
         </member>
         <member name="M:YD_Event.Application.Client.MyController.ProcessAvatarImage(System.IO.Stream)">