diff --git a/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs b/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs
index fe81b44..fa64c68 100644
--- a/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs
+++ b/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs
@@ -95,9 +95,6 @@ namespace YooAsset
 					_steps = ESteps.Done;
 					Status = EStatus.Succeed;
 				}
-
-				// 注意：释放下载句柄
-				_downloader.DisposeHandler();
 			}
 		}
 
diff --git a/Assets/YooAsset/Runtime/DownloadSystem/Downloader/WebDownloader.cs b/Assets/YooAsset/Runtime/DownloadSystem/Downloader/WebDownloader.cs
index 3464457..405c3a7 100644
--- a/Assets/YooAsset/Runtime/DownloadSystem/Downloader/WebDownloader.cs
+++ b/Assets/YooAsset/Runtime/DownloadSystem/Downloader/WebDownloader.cs
@@ -22,10 +22,10 @@ namespace YooAsset
 			Done,
 		}
 
-		private bool _keepDownloadHandleLife = false;
 		private DownloadHandlerAssetBundle _downloadhandler;
 		private ESteps _steps = ESteps.None;
-
+		private bool _getAssetBundle = false;
+		private AssetBundle _cacheAssetBundle;
 
 		public WebDownloader(BundleInfo bundleInfo, int failedTryAgain, int timeout) : base(bundleInfo, failedTryAgain, timeout)
 		{
@@ -34,7 +34,10 @@ namespace YooAsset
 		{
 			if (_steps == ESteps.None)
 			{
-				_keepDownloadHandleLife = (bool)param[0];
+				if (param.Length > 0)
+				{
+					_getAssetBundle = (bool)param[0];
+				}
 				_steps = ESteps.PrepareDownload;
 			}
 		}
@@ -135,11 +138,18 @@ namespace YooAsset
 					_lastCode = 0;
 				}
 
-				// 最终释放请求
-				DisposeRequest();
+				if (_getAssetBundle)
+				{
+					_cacheAssetBundle = _downloadhandler.assetBundle;
+					if (_cacheAssetBundle == null)
+					{
+						_lastError = "assetBundle is null";
+						_steps = ESteps.TryAgain;
+					}
+				}
 
-				if (_keepDownloadHandleLife == false)
-					DisposeHandler();
+				// 最终释放请求
+				DisposeRequest();	
 			}
 
 			// 重新尝试下载
@@ -148,7 +158,6 @@ namespace YooAsset
 				if (_failedTryAgain <= 0)
 				{
 					DisposeRequest();
-					DisposeHandler();
 					ReportError();
 					_status = EStatus.Failed;
 					_steps = ESteps.Done;
@@ -175,7 +184,6 @@ namespace YooAsset
 				_lastCode = 0;
 
 				DisposeRequest();
-				DisposeHandler();
 			}
 		}
 		private void DisposeRequest()
@@ -185,6 +193,11 @@ namespace YooAsset
 				_webRequest.Dispose();
 				_webRequest = null;
 			}
+			if (_downloadhandler != null)
+			{
+				_downloadhandler.Dispose();
+				_downloadhandler = null;
+			}
 		}
 
 		/// <summary>
@@ -192,22 +205,7 @@ namespace YooAsset
 		/// </summary>
 		public AssetBundle GetAssetBundle()
 		{
-			if (_downloadhandler != null)
-				return _downloadhandler.assetBundle;
-
-			return null;
-		}
-
-		/// <summary>
-		/// 释放下载句柄
-		/// </summary>
-		public void DisposeHandler()
-		{
-			if (_downloadhandler != null)
-			{
-				_downloadhandler.Dispose();
-				_downloadhandler = null;
-			}
+			return _cacheAssetBundle;
 		}
 	}
 }
\ No newline at end of file
diff --git a/Assets/YooAsset/Runtime/PackageSystem/PlayMode/WebPlayModeImpl.cs b/Assets/YooAsset/Runtime/PackageSystem/PlayMode/WebPlayModeImpl.cs
index 24a846f..2ab2e58 100644
--- a/Assets/YooAsset/Runtime/PackageSystem/PlayMode/WebPlayModeImpl.cs
+++ b/Assets/YooAsset/Runtime/PackageSystem/PlayMode/WebPlayModeImpl.cs
@@ -33,6 +33,16 @@ namespace YooAsset
 		}
 
 		// 下载相关
+		private List<BundleInfo> ConvertToDownloadList(List<PackageBundle> downloadList)
+		{
+			List<BundleInfo> result = new List<BundleInfo>(downloadList.Count);
+			foreach (var packageBundle in downloadList)
+			{
+				var bundleInfo = ConvertToDownloadInfo(packageBundle);
+				result.Add(bundleInfo);
+			}
+			return result;
+		}
 		private BundleInfo ConvertToDownloadInfo(PackageBundle packageBundle)
 		{
 			string remoteMainURL = _remoteServices.GetRemoteMainURL(packageBundle.FileName);
@@ -84,15 +94,101 @@ namespace YooAsset
 
 		ResourceDownloaderOperation IPlayModeServices.CreateResourceDownloaderByAll(int downloadingMaxNumber, int failedTryAgain, int timeout)
 		{
-			return ResourceDownloaderOperation.CreateEmptyDownloader(downloadingMaxNumber, failedTryAgain, timeout);
+			List<BundleInfo> downloadList = GetDownloadListByAll(_activeManifest);
+			var operation = new ResourceDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
+			return operation;
 		}
+		public List<BundleInfo> GetDownloadListByAll(PackageManifest manifest)
+		{
+			List<PackageBundle> downloadList = new List<PackageBundle>(1000);
+			foreach (var packageBundle in manifest.BundleList)
+			{
+				// 忽略APP资源
+				if (IsBuildinPackageBundle(packageBundle))
+					continue;
+
+				downloadList.Add(packageBundle);
+			}
+
+			return ConvertToDownloadList(downloadList);
+		}
+
 		ResourceDownloaderOperation IPlayModeServices.CreateResourceDownloaderByTags(string[] tags, int downloadingMaxNumber, int failedTryAgain, int timeout)
 		{
-			return ResourceDownloaderOperation.CreateEmptyDownloader(downloadingMaxNumber, failedTryAgain, timeout);
+			List<BundleInfo> downloadList = GetDownloadListByTags(_activeManifest, tags);
+			var operation = new ResourceDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
+			return operation;
 		}
+		public List<BundleInfo> GetDownloadListByTags(PackageManifest manifest, string[] tags)
+		{
+			List<PackageBundle> downloadList = new List<PackageBundle>(1000);
+			foreach (var packageBundle in manifest.BundleList)
+			{
+				// 忽略APP资源
+				if (IsBuildinPackageBundle(packageBundle))
+					continue;
+
+				// 如果未带任何标记，则统一下载
+				if (packageBundle.HasAnyTags() == false)
+				{
+					downloadList.Add(packageBundle);
+				}
+				else
+				{
+					// 查询DLC资源
+					if (packageBundle.HasTag(tags))
+					{
+						downloadList.Add(packageBundle);
+					}
+				}
+			}
+
+			return ConvertToDownloadList(downloadList);
+		}
+
 		ResourceDownloaderOperation IPlayModeServices.CreateResourceDownloaderByPaths(AssetInfo[] assetInfos, int downloadingMaxNumber, int failedTryAgain, int timeout)
 		{
-			return ResourceDownloaderOperation.CreateEmptyDownloader(downloadingMaxNumber, failedTryAgain, timeout);
+			List<BundleInfo> downloadList = GetDownloadListByPaths(_activeManifest, assetInfos);
+			var operation = new ResourceDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
+			return operation;
+		}
+		public List<BundleInfo> GetDownloadListByPaths(PackageManifest manifest, AssetInfo[] assetInfos)
+		{
+			// 获取资源对象的资源包和所有依赖资源包
+			List<PackageBundle> checkList = new List<PackageBundle>();
+			foreach (var assetInfo in assetInfos)
+			{
+				if (assetInfo.IsInvalid)
+				{
+					YooLogger.Warning(assetInfo.Error);
+					continue;
+				}
+
+				// 注意：如果清单里未找到资源包会抛出异常！
+				PackageBundle mainBundle = manifest.GetMainPackageBundle(assetInfo.AssetPath);
+				if (checkList.Contains(mainBundle) == false)
+					checkList.Add(mainBundle);
+
+				// 注意：如果清单里未找到资源包会抛出异常！
+				PackageBundle[] dependBundles = manifest.GetAllDependencies(assetInfo.AssetPath);
+				foreach (var dependBundle in dependBundles)
+				{
+					if (checkList.Contains(dependBundle) == false)
+						checkList.Add(dependBundle);
+				}
+			}
+
+			List<PackageBundle> downloadList = new List<PackageBundle>(1000);
+			foreach (var packageBundle in checkList)
+			{
+				// 忽略APP资源
+				if (IsBuildinPackageBundle(packageBundle))
+					continue;
+
+				downloadList.Add(packageBundle);
+			}
+
+			return ConvertToDownloadList(downloadList);
 		}
 
 		ResourceUnpackerOperation IPlayModeServices.CreateResourceUnpackerByAll(int upackingMaxNumber, int failedTryAgain, int timeout)