diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildAssetInfo.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildAssetInfo.cs
index 53abb7f..308b1e1 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildAssetInfo.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildAssetInfo.cs
@@ -63,7 +63,7 @@ namespace YooAsset.Editor
 			IsRawAsset = isRawAsset;
 
 			System.Type assetType = UnityEditor.AssetDatabase.GetMainAssetTypeAtPath(assetPath);
-			if (assetType == typeof(UnityEngine.Shader))
+			if (assetType == typeof(UnityEngine.Shader) || assetType == typeof(UnityEngine.ShaderVariantCollection))
 				IsShaderAsset = true;
 			else
 				IsShaderAsset = false;
@@ -76,7 +76,7 @@ namespace YooAsset.Editor
 			IsRawAsset = false;
 
 			System.Type assetType = UnityEditor.AssetDatabase.GetMainAssetTypeAtPath(assetPath);
-			if (assetType == typeof(UnityEngine.Shader))
+			if (assetType == typeof(UnityEngine.Shader) || assetType == typeof(UnityEngine.ShaderVariantCollection))
 				IsShaderAsset = true;
 			else
 				IsShaderAsset = false;
diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
index b222759..e698477 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
@@ -89,14 +89,6 @@ namespace YooAsset.Editor
 			return result.ToArray();
 		}
 
-		/// <summary>
-		/// 获取文件的扩展名
-		/// </summary>
-		public string GetAppendExtension()
-		{
-			return System.IO.Path.GetExtension(BundleName);
-		}
-
 		/// <summary>
 		/// 获取构建的资源路径列表
 		/// </summary>