diff --git a/Assets/YooAsset/Runtime/ResourceManager/Loader/BundleLoaderBase.cs b/Assets/YooAsset/Runtime/ResourceManager/Loader/BundleLoaderBase.cs
index 0d651b0..b7e7080 100644
--- a/Assets/YooAsset/Runtime/ResourceManager/Loader/BundleLoaderBase.cs
+++ b/Assets/YooAsset/Runtime/ResourceManager/Loader/BundleLoaderBase.cs
@@ -116,9 +116,8 @@ namespace YooAsset
 				return;
 			*/
 
-			_removeList.Clear();
-
 			// 获取移除列表
+			_removeList.Clear();
 			foreach (var provider in _providers)
 			{
 				if (provider.CanDestroy())
@@ -136,8 +135,6 @@ namespace YooAsset
 
 			// 移除资源提供者
 			Impl.RemoveBundleProviders(_removeList);
-
-			_removeList.Clear();
 		}
 
 
diff --git a/Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderBase.cs b/Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderBase.cs
index 1e2a9e9..d457399 100644
--- a/Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderBase.cs
+++ b/Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderBase.cs
@@ -199,8 +199,9 @@ namespace YooAsset
 		/// </summary>
 		public void ReleaseAllHandles()
 		{
-			foreach (var handle in _handles)
+			for (int i = _handles.Count - 1; i >= 0; i--)
 			{
+				var handle = _handles[i];
 				handle.ReleaseInternal();
 			}
 		}
diff --git a/Assets/YooAsset/Runtime/YooAssets.cs b/Assets/YooAsset/Runtime/YooAssets.cs
index 00e977e..bcf06a6 100644
--- a/Assets/YooAsset/Runtime/YooAssets.cs
+++ b/Assets/YooAsset/Runtime/YooAssets.cs
@@ -12,6 +12,14 @@ namespace YooAsset
 		private static GameObject _driver = null;
 		private static readonly List<ResourcePackage> _packages = new List<ResourcePackage>();
 
+		/// <summary>
+		/// 是否已经初始化
+		/// </summary>
+		public static bool Initialized
+		{
+			get { return _isInitialize; }
+		}
+
 		/// <summary>
 		/// 初始化资源系统
 		/// </summary>
@@ -90,7 +98,7 @@ namespace YooAsset
 		public static ResourcePackage CreatePackage(string packageName)
 		{
 			CheckException(packageName);
-			if (HasPackage(packageName))
+			if (ContainsPackage(packageName))
 				throw new Exception($"Package {packageName} already existed !");
 
 			YooLogger.Log($"Create resource package : {packageName}");
@@ -142,7 +150,7 @@ namespace YooAsset
 		/// 检测资源包是否存在
 		/// </summary>
 		/// <param name="packageName">资源包名称</param>
-		public static bool HasPackage(string packageName)
+		public static bool ContainsPackage(string packageName)
 		{
 			CheckException(packageName);
 			var package = GetPackageInternal(packageName);