diff --git a/Storage/Storage.Test/FileTest.cs b/Storage/Storage.Test/FileTest.cs
index 08ac1b7..45916dc 100644
--- a/Storage/Storage.Test/FileTest.cs
+++ b/Storage/Storage.Test/FileTest.cs
@@ -7,6 +7,7 @@ using LeanCloud.Storage;
 namespace LeanCloud.Test {
     public class FileTest {
         static readonly string AvatarFilePath = "../../../assets/hello.png";
+        static readonly string APKFilePath = "../../../assets/test.apk";
 
         [SetUp]
         public void SetUp() {
@@ -31,7 +32,9 @@ namespace LeanCloud.Test {
         [Test]
         public async Task SaveFromPath() {
             LCFile file = new LCFile("avatar", AvatarFilePath);
-            await file.Save();
+            await file.Save((count, total) => {
+                TestContext.WriteLine($"progress: {count}/{total}");
+            });
             TestContext.WriteLine(file.ObjectId);
             Assert.NotNull(file.ObjectId);
         }
@@ -60,7 +63,7 @@ namespace LeanCloud.Test {
 
         [Test]
         public async Task Qiniu() {
-            LCFile file = new LCFile("avatar", AvatarFilePath);
+            LCFile file = new LCFile("avatar", APKFilePath);
             await file.Save();
             TestContext.WriteLine(file.ObjectId);
             Assert.NotNull(file.ObjectId);
@@ -70,7 +73,7 @@ namespace LeanCloud.Test {
         public async Task AWS() {
             Logger.LogDelegate += Utils.Print;
             LeanCloud.Initialize("UlCpyvLm8aMzQsW6KnP6W3Wt-MdYXbMMI", "PyCTYoNoxCVoKKg394PBeS4r", "https://ulcpyvlm.api.lncldglobal.com");
-            LCFile file = new LCFile("avatar", "../../../assets/hello.png");
+            LCFile file = new LCFile("avatar", APKFilePath);
             await file.Save();
             TestContext.WriteLine(file.ObjectId);
             Assert.NotNull(file.ObjectId);
diff --git a/Storage/Storage/Internal/File/LCAWSUploader.cs b/Storage/Storage/Internal/File/LCAWSUploader.cs
index b1e891e..fba5d99 100644
--- a/Storage/Storage/Internal/File/LCAWSUploader.cs
+++ b/Storage/Storage/Internal/File/LCAWSUploader.cs
@@ -19,11 +19,13 @@ namespace LeanCloud.Storage.Internal.File {
             this.data = data;
         }
 
-        internal async Task Upload(Action<int, int> onProgress) {
+        internal async Task Upload(Action<long, long> onProgress) {
+            LCProgressableStreamContent content = new LCProgressableStreamContent(new ByteArrayContent(data), onProgress);
+
             HttpRequestMessage request = new HttpRequestMessage {
                 RequestUri = new Uri(uploadUrl),
                 Method = HttpMethod.Put,
-                Content = new ByteArrayContent(data)
+                Content = content
             };
             HttpClient client = new HttpClient();
             request.Headers.CacheControl = new CacheControlHeaderValue {
diff --git a/Storage/Storage/Internal/File/LCProgressableStreamContent.cs b/Storage/Storage/Internal/File/LCProgressableStreamContent.cs
new file mode 100644
index 0000000..161c273
--- /dev/null
+++ b/Storage/Storage/Internal/File/LCProgressableStreamContent.cs
@@ -0,0 +1,71 @@
+using System;
+using System.IO;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace LeanCloud.Storage.Internal.File {
+    internal class LCProgressableStreamContent : HttpContent {
+        const int defaultBufferSize = 5 * 4096;
+
+        readonly HttpContent content;
+
+        readonly int bufferSize;
+
+        readonly Action<long, long> progress;
+
+        internal LCProgressableStreamContent(HttpContent content, Action<long, long> progress) : this(content, defaultBufferSize, progress) { }
+
+        internal LCProgressableStreamContent(HttpContent content, int bufferSize, Action<long, long> progress) {
+            if (content == null) {
+                throw new ArgumentNullException("content");
+            }
+            if (bufferSize <= 0) {
+                throw new ArgumentOutOfRangeException("bufferSize");
+            }
+
+            this.content = content;
+            this.bufferSize = bufferSize;
+            this.progress = progress;
+
+            foreach (var h in content.Headers) {
+                Headers.Add(h.Key, h.Value);
+            }
+        }
+
+        protected override Task SerializeToStreamAsync(Stream stream, TransportContext context) {
+
+            return Task.Run(async () => {
+                var buffer = new byte[bufferSize];
+                TryComputeLength(out long size);
+                var uploaded = 0;
+
+                using (var sinput = await content.ReadAsStreamAsync()) {
+                    while (true) {
+                        var length = sinput.Read(buffer, 0, buffer.Length);
+                        if (length <= 0) break;
+
+                        uploaded += length;
+                        progress?.Invoke(uploaded, size);
+
+                        stream.Write(buffer, 0, length);
+                        stream.Flush();
+                    }
+                }
+                stream.Flush();
+            });
+        }
+
+        protected override bool TryComputeLength(out long length) {
+            length = content.Headers.ContentLength.GetValueOrDefault();
+            return true;
+        }
+
+        protected override void Dispose(bool disposing) {
+            if (disposing) {
+                content.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+    }
+}
diff --git a/Storage/Storage/Internal/File/LCQiniuUploader.cs b/Storage/Storage/Internal/File/LCQiniuUploader.cs
index ae700e0..69310ca 100644
--- a/Storage/Storage/Internal/File/LCQiniuUploader.cs
+++ b/Storage/Storage/Internal/File/LCQiniuUploader.cs
@@ -22,11 +22,14 @@ namespace LeanCloud.Storage.Internal.File {
             this.data = data;
         }
 
-        internal async Task Upload(Action<int, int> onProgress) {
-            MultipartFormDataContent content = new MultipartFormDataContent();
-            content.Add(new StringContent(key), "key");
-            content.Add(new StringContent(token), "token");
-            content.Add(new ByteArrayContent(data), "file");
+        internal async Task Upload(Action<long, long> onProgress) {
+            MultipartFormDataContent dataContent = new MultipartFormDataContent();
+            dataContent.Add(new StringContent(key), "key");
+            dataContent.Add(new StringContent(token), "token");
+            dataContent.Add(new ByteArrayContent(data), "file");
+
+            LCProgressableStreamContent content = new LCProgressableStreamContent(dataContent, onProgress);
+
             HttpRequestMessage request = new HttpRequestMessage {
                 RequestUri = new Uri(uploadUrl),
                 Method = HttpMethod.Post,
diff --git a/Storage/Storage/LCFile.cs b/Storage/Storage/LCFile.cs
index c32774a..7902e11 100644
--- a/Storage/Storage/LCFile.cs
+++ b/Storage/Storage/LCFile.cs
@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using LeanCloud.Storage.Internal.File;
 using LeanCloud.Storage.Internal.Object;
+using LeanCloud.Common;
 
 namespace LeanCloud.Storage {
     public class LCFile : LCObject {
@@ -67,7 +68,7 @@ namespace LeanCloud.Storage {
             MetaData[key] = value;
         }
 
-        public async Task<LCFile> Save() {
+        public async Task<LCFile> Save(Action<long, long> onProgress = null) {
             if (!string.IsNullOrEmpty(Url)) {
                 // 外链方式
                 await base.Save();
@@ -81,11 +82,11 @@ namespace LeanCloud.Storage {
                 if (provider == "s3") {
                     // AWS
                     LCAWSUploader uploader = new LCAWSUploader(uploadUrl, MimeType, data);
-                    await uploader.Upload(null);
+                    await uploader.Upload(onProgress);
                 } else if (provider == "qiniu") {
                     // Qiniu
                     LCQiniuUploader uploader = new LCQiniuUploader(uploadUrl, token, key, data);
-                    await uploader.Upload(null);
+                    await uploader.Upload(onProgress);
                 } else {
                     throw new Exception($"{provider} is not support.");
                 }