diff --git a/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs b/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs
new file mode 100644
index 00000000..f37396ac
--- /dev/null
+++ b/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs
@@ -0,0 +1,21 @@
+
+namespace YooAsset
+{
+    public class ManifestDefine
+    {
+        /// <summary>
+        /// 文件极限大小（100MB）
+        /// </summary>
+        public const int FileMaxSize = 104857600;
+
+        /// <summary>
+        /// 文件头标记
+        /// </summary>
+        public const uint FileSign = 0x594F4F;
+
+        /// <summary>
+        /// 文件格式版本
+        /// </summary>
+        public const string FileVersion = "2.3.1";
+    }
+}
\ No newline at end of file
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs.meta b/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs.meta
new file mode 100644
index 00000000..956b8c0e
--- /dev/null
+++ b/Assets/YooAsset/Runtime/ResourcePackage/ManifestDefine.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 3282b72521a19144292a482e50ba0429
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs b/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
index cfe87568..ffb7b5e1 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
@@ -26,10 +26,10 @@ namespace YooAsset
             using (FileStream fs = new FileStream(savePath, FileMode.Create))
             {
                 // 创建缓存器
-                BufferWriter buffer = new BufferWriter(YooAssetSettings.ManifestFileMaxSize);
+                BufferWriter buffer = new BufferWriter(ManifestDefine.FileMaxSize);
 
                 // 写入文件标记
-                buffer.WriteUInt32(YooAssetSettings.ManifestFileSign);
+                buffer.WriteUInt32(ManifestDefine.FileSign);
 
                 // 写入文件版本
                 buffer.WriteUTF8(manifest.FileVersion);
@@ -97,13 +97,13 @@ namespace YooAsset
 
             // 读取文件标记
             uint fileSign = buffer.ReadUInt32();
-            if (fileSign != YooAssetSettings.ManifestFileSign)
+            if (fileSign != ManifestDefine.FileSign)
                 throw new Exception("Invalid manifest file !");
 
             // 读取文件版本
             string fileVersion = buffer.ReadUTF8();
-            if (fileVersion != YooAssetSettings.ManifestFileVersion)
-                throw new Exception($"The manifest file version are not compatible : {fileVersion} != {YooAssetSettings.ManifestFileVersion}");
+            if (fileVersion != ManifestDefine.FileVersion)
+                throw new Exception($"The manifest file version are not compatible : {fileVersion} != {ManifestDefine.FileVersion}");
 
             PackageManifest manifest = new PackageManifest();
             {
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs b/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
index 4e4b8d34..824854a2 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
@@ -57,7 +57,7 @@ namespace YooAsset
 
                     // 读取文件标记
                     uint fileSign = _buffer.ReadUInt32();
-                    if (fileSign != YooAssetSettings.ManifestFileSign)
+                    if (fileSign != ManifestDefine.FileSign)
                     {
                         _steps = ESteps.Done;
                         Status = EOperationStatus.Failed;
@@ -67,11 +67,11 @@ namespace YooAsset
 
                     // 读取文件版本
                     string fileVersion = _buffer.ReadUTF8();
-                    if (fileVersion != YooAssetSettings.ManifestFileVersion)
+                    if (fileVersion != ManifestDefine.FileVersion)
                     {
                         _steps = ESteps.Done;
                         Status = EOperationStatus.Failed;
-                        Error = $"The manifest file version are not compatible : {fileVersion} != {YooAssetSettings.ManifestFileVersion}";
+                        Error = $"The manifest file version are not compatible : {fileVersion} != {ManifestDefine.FileVersion}";
                         return;
                     }
 
diff --git a/Assets/YooAsset/Runtime/Settings/YooAssetSettings.cs b/Assets/YooAsset/Runtime/Settings/YooAssetSettings.cs
index 0fb841e7..3562a812 100644
--- a/Assets/YooAsset/Runtime/Settings/YooAssetSettings.cs
+++ b/Assets/YooAsset/Runtime/Settings/YooAssetSettings.cs
@@ -16,22 +16,6 @@ namespace YooAsset
         public string PackageManifestPrefix = string.Empty;
         
 
-        /// <summary>
-        /// 清单文件头标记
-        /// </summary>
-        public const uint ManifestFileSign = 0x594F4F;
-
-        /// <summary>
-        /// 清单文件极限大小（100MB）
-        /// </summary>
-        public const int ManifestFileMaxSize = 104857600;
-
-        /// <summary>
-        /// 清单文件格式版本
-        /// </summary>
-        public const string ManifestFileVersion = "2.3.1";
-
-
         /// <summary>
         /// 构建输出文件夹名称
         /// </summary>