diff --git a/Editor/HotUpdate.meta b/Editor/HotUpdate.meta
new file mode 100644
index 0000000..7b7bf3d
--- /dev/null
+++ b/Editor/HotUpdate.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: e60a8b17b0e23a94a8ae875716208030
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Editor/HotUpdate/MissingMetadataChecker.cs b/Editor/HotUpdate/MissingMetadataChecker.cs
new file mode 100644
index 0000000..b564861
--- /dev/null
+++ b/Editor/HotUpdate/MissingMetadataChecker.cs
@@ -0,0 +1,96 @@
+using dnlib.DotNet;
+using HybridCLR.Editor.Meta;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HybridCLR.Editor.HotUpdate
+{
+    public class MissingMetadataChecker
+    {
+        private readonly HashSet<string> _aotAssNames;
+
+        private readonly AssemblyCache _assCache;
+
+        public MissingMetadataChecker(string aotDllDir, IEnumerable<string> excludeDllNames)
+        {
+
+            var excludeDllNameSet = new HashSet<string>(excludeDllNames ?? new List<string>());
+            _aotAssNames = new HashSet<string>();
+            foreach (var aotFile in Directory.GetFiles(aotDllDir, "*.dll"))
+            {
+                string aotAssName = Path.GetFileNameWithoutExtension(aotFile);
+                if (excludeDllNameSet.Contains(aotAssName))
+                {
+                    continue;
+                }
+                _aotAssNames.Add(aotAssName);
+            }
+            _assCache = new AssemblyCache(new PathAssemblyResolver(aotDllDir));
+        }
+
+        public bool Check(string hotUpdateDllPath)
+        {
+            ModuleDef mod = ModuleDefMD.Load(File.ReadAllBytes(hotUpdateDllPath), _assCache.ModCtx);
+
+            foreach (var refass in mod.GetAssemblyRefs())
+            {
+                string refAssName = refass.Name;
+                if (_aotAssNames.Contains(refAssName))
+                {
+                    _assCache.LoadModule(refass.Name, true);
+                }
+            }
+
+            bool anyMissing = false;
+
+            foreach (TypeRef typeRef in mod.GetTypeRefs())
+            {
+                string defAssName = typeRef.DefinitionAssembly.Name;
+                if (!_aotAssNames.Contains(defAssName))
+                {
+                    continue;
+                }
+                if (typeRef.ResolveTypeDef() == null)
+                {
+                    UnityEngine.Debug.LogError($"Missing Type: {typeRef.FullName}");
+                    anyMissing = true;
+                }
+            }
+
+            foreach (IMethodDefOrRef methodRef in mod.GetMemberRefs())
+            {
+                if (methodRef.DeclaringType.DefinitionAssembly == null)
+                {
+                    continue;
+                }
+                string defAssName = methodRef.DeclaringType.DefinitionAssembly.Name;
+                if (!_aotAssNames.Contains(defAssName))
+                {
+                    continue;
+                }
+                if (methodRef.IsField)
+                {
+                    
+                }
+                else if (methodRef.IsMethod)
+                {
+                    TypeSig declaringTypeSig = methodRef.DeclaringType.ToTypeSig();
+                    if (methodRef.ResolveMethodDef() == null)
+                    {
+                        if (declaringTypeSig.ElementType == ElementType.Array || declaringTypeSig.ElementType == ElementType.SZArray)
+                        {
+                            continue;
+                        }
+                        UnityEngine.Debug.LogError($"Missing Method: {methodRef.FullName}");
+                        anyMissing = true;
+                    }
+                }
+            }
+            return !anyMissing;
+        }
+    }
+}
diff --git a/Editor/HotUpdate/MissingMetadataChecker.cs.meta b/Editor/HotUpdate/MissingMetadataChecker.cs.meta
new file mode 100644
index 0000000..bc58ca1
--- /dev/null
+++ b/Editor/HotUpdate/MissingMetadataChecker.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bdd260aca2a6deb44b20210f01faa86b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: