diff --git a/Assets/YooAsset/Runtime/ResourcePackage/AssetInfo.cs b/Assets/YooAsset/Runtime/ResourcePackage/AssetInfo.cs
index 3114b314..d5cdb1af 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/AssetInfo.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/AssetInfo.cs
@@ -21,6 +21,13 @@ namespace YooAsset
         /// </summary>
         public string Error { private set; get; }
 
+        /// <summary>
+        /// 资源对象
+        /// </summary>
+        internal PackageAsset Asset
+        {
+            get { return _packageAsset; }
+        }
 
         /// <summary>
         /// 唯一标识符
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs b/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
index fbc1e0d5..66454833 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
@@ -147,22 +147,6 @@ namespace YooAsset
                 return string.Empty;
         }
 
-        /// <summary>
-        /// 获取主资源包
-        /// 注意：传入的资源路径一定合法有效！
-        /// </summary>
-        public PackageBundle GetMainPackageBundle(string assetPath)
-        {
-            if (AssetDic.TryGetValue(assetPath, out PackageAsset packageAsset))
-            {
-                return GetMainPackageBundle(packageAsset.BundleID);
-            }
-            else
-            {
-                throw new Exception("Should never get here !");
-            }
-        }
-
         /// <summary>
         /// 获取主资源包
         /// 注意：传入的资源包ID一定合法有效！
@@ -181,23 +165,17 @@ namespace YooAsset
         }
 
         /// <summary>
-        /// 获取资源依赖列表
-        /// 注意：传入的资源路径一定合法有效！
+        /// 获取主资源包
+        /// 注意：传入的资源对象一定合法有效！
         /// </summary>
-        public PackageBundle[] GetAllDependencies(string assetPath)
+        public PackageBundle GetMainPackageBundle(PackageAsset packageAsset)
         {
-            if (TryGetPackageAsset(assetPath, out PackageAsset packageAsset))
-            {
-                return GetAllDependencies(packageAsset);
-            }
-            else
-            {
-                throw new Exception("Should never get here !");
-            }
+            return GetMainPackageBundle(packageAsset.BundleID);
         }
 
         /// <summary>
         /// 获取资源依赖列表
+        /// 注意：传入的资源对象一定合法有效！
         /// </summary>
         public PackageBundle[] GetAllDependencies(PackageAsset packageAsset)
         {
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/PlayMode/PlayModeImpl.cs b/Assets/YooAsset/Runtime/ResourcePackage/PlayMode/PlayModeImpl.cs
index 388c26e0..9b461fed 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/PlayMode/PlayModeImpl.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/PlayMode/PlayModeImpl.cs
@@ -167,20 +167,20 @@ namespace YooAsset
         }
         BundleInfo IBundleQuery.GetMainBundleInfo(AssetInfo assetInfo)
         {
-            if (assetInfo.IsInvalid)
+            if (assetInfo == null || assetInfo.IsInvalid)
                 throw new Exception("Should never get here !");
 
             // 注意：如果清单里未找到资源包会抛出异常！
-            var packageBundle = ActiveManifest.GetMainPackageBundle(assetInfo.AssetPath);
+            var packageBundle = ActiveManifest.GetMainPackageBundle(assetInfo.Asset);
             return CreateBundleInfo(packageBundle);
         }
         BundleInfo[] IBundleQuery.GetDependBundleInfos(AssetInfo assetInfo)
         {
-            if (assetInfo.IsInvalid)
+            if (assetInfo == null || assetInfo.IsInvalid)
                 throw new Exception("Should never get here !");
 
             // 注意：如果清单里未找到资源包会抛出异常！
-            var depends = ActiveManifest.GetAllDependencies(assetInfo.AssetPath);
+            var depends = ActiveManifest.GetAllDependencies(assetInfo.Asset);
             List<BundleInfo> result = new List<BundleInfo>(depends.Length);
             foreach (var packageBundle in depends)
             {
@@ -197,20 +197,20 @@ namespace YooAsset
         }
         string IBundleQuery.GetMainBundleName(AssetInfo assetInfo)
         {
-            if (assetInfo.IsInvalid)
+            if (assetInfo == null || assetInfo.IsInvalid)
                 throw new Exception("Should never get here !");
 
             // 注意：如果清单里未找到资源包会抛出异常！
-            var packageBundle = ActiveManifest.GetMainPackageBundle(assetInfo.AssetPath);
+            var packageBundle = ActiveManifest.GetMainPackageBundle(assetInfo.Asset);
             return packageBundle.BundleName;
         }
         string[] IBundleQuery.GetDependBundleNames(AssetInfo assetInfo)
         {
-            if (assetInfo.IsInvalid)
+            if (assetInfo == null || assetInfo.IsInvalid)
                 throw new Exception("Should never get here !");
 
             // 注意：如果清单里未找到资源包会抛出异常！
-            var depends = ActiveManifest.GetAllDependencies(assetInfo.AssetPath);
+            var depends = ActiveManifest.GetAllDependencies(assetInfo.Asset);
             List<string> result = new List<string>(depends.Length);
             foreach (var packageBundle in depends)
             {
@@ -319,12 +319,12 @@ namespace YooAsset
                 }
 
                 // 注意：如果清单里未找到资源包会抛出异常！
-                PackageBundle mainBundle = manifest.GetMainPackageBundle(assetInfo.AssetPath);
+                PackageBundle mainBundle = manifest.GetMainPackageBundle(assetInfo.Asset);
                 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[] mainDependBundles = manifest.GetAllDependencies(assetInfo.AssetPath);
+                PackageBundle[] mainDependBundles = manifest.GetAllDependencies(assetInfo.Asset);
                 foreach (var dependBundle in mainDependBundles)
                 {
                     if (checkList.Contains(dependBundle) == false)