diff --git a/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetGroup.cs b/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetGroup.cs
index 9a6f0ae1..638c7c5d 100644
--- a/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetGroup.cs
+++ b/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetGroup.cs
@@ -31,7 +31,7 @@ namespace TEngine
         /// </summary>
         public void Clear()
         {
-            if (_handle != null)
+            if (_handle is { IsValid: true })
             {
                 _handle.Dispose();
             }
diff --git a/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetReference.cs b/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetReference.cs
index 7a73b985..b4337c1c 100644
--- a/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetReference.cs
+++ b/UnityProject/Assets/TEngine/Runtime/Modules/ResourceModule/AssetReference.cs
@@ -59,7 +59,7 @@ namespace TEngine
         public void Bind(AssetOperationHandle operation, string assetLocation, AssetReference parent = null,
             string packageName = "")
         {
-            if (_operationHandle != null)
+            if (_operationHandle is { IsValid: true })
             {
                 Log.Warning($"rebind AssetReference gameObject.name:{gameObject.name} assetLocation:{assetLocation}");
                 _operationHandle.Dispose();