diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
index d009ec5..994bae9 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildBundleInfo.cs
@@ -56,6 +56,7 @@ namespace YooAsset.Editor
         public string EncryptedFilePath { set; get; }
         #endregion
 
+        private readonly HashSet<string> _assetPaths = new HashSet<string>(1000);
 
         /// <summary>
         /// 参与构建的资源列表
@@ -84,9 +85,11 @@ namespace YooAsset.Editor
         /// </summary>
         public void PackAsset(BuildAssetInfo buildAsset)
         {
-            if (IsContainsAsset(buildAsset.AssetInfo.AssetPath))
-                throw new System.Exception($"Should never get here ! Asset is existed : {buildAsset.AssetInfo.AssetPath}");
+            string assetPath = buildAsset.AssetInfo.AssetPath;
+            if (_assetPaths.Contains(assetPath))
+                throw new System.Exception($"Should never get here ! Asset is existed : {assetPath}");
 
+            _assetPaths.Add(assetPath);
             MainAssets.Add(buildAsset);
         }
 
@@ -95,14 +98,7 @@ namespace YooAsset.Editor
         /// </summary>
         public bool IsContainsAsset(string assetPath)
         {
-            foreach (var buildAsset in MainAssets)
-            {
-                if (buildAsset.AssetInfo.AssetPath == assetPath)
-                {
-                    return true;
-                }
-            }
-            return false;
+            return _assetPaths.Contains(assetPath);
         }
 
         /// <summary>