diff --git a/Runtime/Utility/Utility.Http.cs b/Runtime/Utility/Utility.Http.cs
index 8773412..8f41242 100644
--- a/Runtime/Utility/Utility.Http.cs
+++ b/Runtime/Utility/Utility.Http.cs
@@ -9,105 +9,87 @@ namespace AlicizaX
 {
     public static partial class Utility
     {
-        /// <summary>
-        /// Http 相关的实用函数。
-        /// </summary>
         public static partial class Http
         {
             /// <summary>
-            /// GET请求与获取结果。
+            /// 发送 GET 请求
             /// </summary>
-            /// <param name="url">网络URL。</param>
-            /// <param name="timeout">超时时间。</param>
-            /// <returns>请求结果。</returns>
             public static async UniTask<string> Get(string url, float timeout = 5f)
             {
-                var cts = new CancellationTokenSource();
-                cts.CancelAfterSlim(TimeSpan.FromSeconds(timeout));
-
-                using UnityWebRequest unityWebRequest = UnityWebRequest.Get(url);
-                return await SendWebRequest(unityWebRequest, cts);
+                using var cts = CreateTimeoutTokenSource(timeout);
+                using var request = UnityWebRequest.Get(url);
+                return await SendRequest(request, cts.Token);
             }
 
             /// <summary>
-            /// Post请求与获取结果.
+            /// 发送 JSON 格式的 POST 请求（服务端需用 [FromBody] 接收）
             /// </summary>
-            /// <param name="url">网络URL。</param>
-            /// <param name="postData">Post数据。</param>
-            /// <param name="timeout">超时时间。</param>
-            /// <returns>请求结果。</returns>
-            public static async UniTask<string> Post(string url, string postData, float timeout = 5f)
+            public static async UniTask<string> PostJson(string url, object jsonData, float timeout = 5f)
+            {
+                using var cts = CreateTimeoutTokenSource(timeout);
+                var json = JsonUtility.ToJson(jsonData);
+                using var request = CreateJsonPostRequest(url, json);
+                return await SendRequest(request, cts.Token);
+            }
+
+            /// <summary>
+            /// 发送表单格式的 POST 请求（x-www-form-urlencoded）
+            /// </summary>
+            public static async UniTask<string> PostForm(string url, Dictionary<string, string> formData, float timeout = 5f)
+            {
+                using var cts = CreateTimeoutTokenSource(timeout);
+                using var request = UnityWebRequest.Post(url, formData);
+                return await SendRequest(request, cts.Token);
+            }
+
+            /// <summary>
+            /// 发送多部分表单的 POST 请求（multipart/form-data，支持文件上传）
+            /// </summary>
+            public static async UniTask<string> PostMultipart(string url, WWWForm formData, float timeout = 5f)
+            {
+                using var cts = CreateTimeoutTokenSource(timeout);
+                using var request = UnityWebRequest.Post(url, formData);
+                return await SendRequest(request, cts.Token);
+            }
+
+            //----- 私有工具方法 -----
+            private static CancellationTokenSource CreateTimeoutTokenSource(float timeout)
             {
                 var cts = new CancellationTokenSource();
                 cts.CancelAfterSlim(TimeSpan.FromSeconds(timeout));
-
-                using UnityWebRequest unityWebRequest = UnityWebRequest.PostWwwForm(url, postData);
-                return await SendWebRequest(unityWebRequest, cts);
+                return cts;
             }
 
-            /// <summary>
-            /// Post请求与获取结果.
-            /// </summary>
-            /// <param name="url">网络URL。</param>
-            /// <param name="formFields">Post数据。</param>
-            /// <param name="timeout">超时时间。</param>
-            /// <returns>请求结果。</returns>
-            public static async UniTask<string> Post(string url, Dictionary<string, string> formFields, float timeout = 5f)
+            private static UnityWebRequest CreateJsonPostRequest(string url, string json)
             {
-                var cts = new CancellationTokenSource();
-                cts.CancelAfterSlim(TimeSpan.FromSeconds(timeout));
-
-                using UnityWebRequest unityWebRequest = UnityWebRequest.Post(url, formFields);
-                return await SendWebRequest(unityWebRequest, cts);
+                // 手动处理 JSON（Unity 未提供直接方法）
+                var request = new UnityWebRequest(url, "POST");
+                byte[] jsonBytes = System.Text.Encoding.UTF8.GetBytes(json);
+                request.uploadHandler = new UploadHandlerRaw(jsonBytes);
+                request.downloadHandler = new DownloadHandlerBuffer();
+                request.SetRequestHeader("Content-Type", "application/json");
+                return request;
             }
 
-            /// <summary>
-            /// Post请求与获取结果.
-            /// </summary>
-            /// <param name="url">网络URL。</param>
-            /// <param name="formData">Post数据。</param>
-            /// <param name="timeout">超时时间。</param>
-            /// <returns>请求结果。</returns>
-            public static async UniTask<string> Post(string url, WWWForm formData, float timeout = 5f)
-            {
-                var cts = new CancellationTokenSource();
-                cts.CancelAfterSlim(TimeSpan.FromSeconds(timeout));
-
-                using UnityWebRequest unityWebRequest = UnityWebRequest.Post(url, formData);
-                return await SendWebRequest(unityWebRequest, cts);
-            }
-
-            /// <summary>
-            /// 抛出网络请求。
-            /// </summary>
-            /// <param name="unityWebRequest">UnityWebRequest。</param>
-            /// <param name="cts">CancellationTokenSource。</param>
-            /// <returns>请求结果。</returns>
-            public static async UniTask<string> SendWebRequest(UnityWebRequest unityWebRequest, CancellationTokenSource cts)
+            private static async UniTask<string> SendRequest(UnityWebRequest request, CancellationToken token)
             {
                 try
                 {
-                    var (isCanceled, _) = await unityWebRequest.SendWebRequest().WithCancellation(cts.Token).SuppressCancellationThrow();
-                    if (isCanceled)
-                    {
-                        Log.Warning($"HttpPost {unityWebRequest.url} be canceled!");
-                        unityWebRequest.Dispose();
-                        return string.Empty;
-                    }
-                }
-                catch (OperationCanceledException ex)
-                {
-                    if (ex.CancellationToken == cts.Token)
-                    {
-                        Log.Warning("HttpPost Timeout");
-                        unityWebRequest.Dispose();
-                        return string.Empty;
-                    }
-                }
+                    await request.SendWebRequest().WithCancellation(token);
 
-                string ret = unityWebRequest.downloadHandler.text;
-                unityWebRequest.Dispose();
-                return ret;
+                    if (request.result != UnityWebRequest.Result.Success)
+                    {
+                        Debug.LogError($"HTTP Error ({request.responseCode}): {request.error}");
+                        return string.Empty;
+                    }
+
+                    return request.downloadHandler.text;
+                }
+                catch (OperationCanceledException) when (token.IsCancellationRequested)
+                {
+                    Debug.LogWarning("Request timed out.");
+                    return string.Empty;
+                }
             }
         }
     }