diff --git a/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java b/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java
index 5821f9b2..cd3eda11 100644
--- a/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java
+++ b/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java
@@ -16,7 +16,6 @@ import com.zfoo.protocol.IPacket;
 import com.zfoo.protocol.ProtocolManager;
 import com.zfoo.protocol.exception.RunException;
 import com.zfoo.protocol.registration.IProtocolRegistration;
-import com.zfoo.protocol.registration.ProtocolAnalysis;
 import com.zfoo.protocol.util.FileUtils;
 import com.zfoo.protocol.util.IOUtils;
 import com.zfoo.protocol.util.StringUtils;
@@ -40,11 +39,11 @@ import java.util.function.BiConsumer;
  */
 public class FileChannelMap<V extends IPacket> implements LpMap<V>, Closeable {
 
-    private File dbFile;
+    private final File dbFile;
     protected RandomAccessFile dbFileRandomAccess;
     protected FileChannel dbFileChannel;
 
-    private File indexFile;
+    private final File indexFile;
     protected RandomAccessFile indexFileRandomAccess;
     protected FileChannel indexFileChannel;
 
@@ -65,7 +64,7 @@ public class FileChannelMap<V extends IPacket> implements LpMap<V>, Closeable {
             this.indexFileRandomAccess = new RandomAccessFile(indexFile, "rw");
             this.indexFileChannel = this.indexFileRandomAccess.getChannel();
 
-            var protocolId = ProtocolAnalysis.getProtocolIdByClass(clazz);
+            var protocolId = ProtocolManager.getProtocolIdByClass(clazz);
             protocolRegistration = ProtocolManager.getProtocol(protocolId);
 
             indexBuffer = ByteBufAllocator.DEFAULT.ioBuffer(16);
diff --git a/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java b/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java
index 3de64521..2e61f95d 100644
--- a/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java
+++ b/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java
@@ -16,7 +16,6 @@ import com.zfoo.protocol.IPacket;
 import com.zfoo.protocol.ProtocolManager;
 import com.zfoo.protocol.buffer.ByteBufUtils;
 import com.zfoo.protocol.registration.IProtocolRegistration;
-import com.zfoo.protocol.registration.ProtocolAnalysis;
 import com.zfoo.protocol.util.FileUtils;
 import com.zfoo.protocol.util.IOUtils;
 import com.zfoo.protocol.util.StringUtils;
@@ -37,17 +36,17 @@ import java.util.function.BiConsumer;
  */
 public class FileHeapMap<V extends IPacket> implements LpMap<V> {
 
-    private File dbFile;
+    private final File dbFile;
 
-    private IProtocolRegistration protocolRegistration;
+    private final IProtocolRegistration protocolRegistration;
 
-    private HeapMap<V> heapMap;
+    private final HeapMap<V> heapMap;
 
     public FileHeapMap(String dbPath, Class<V> clazz) {
         try {
             this.dbFile = FileUtils.getOrCreateFile(dbPath, StringUtils.format("{}.db", clazz.getSimpleName()));
 
-            var protocolId = ProtocolAnalysis.getProtocolIdByClass(clazz);
+            var protocolId = ProtocolManager.getProtocolIdByClass(clazz);
             protocolRegistration = ProtocolManager.getProtocol(protocolId);
             heapMap = new HeapMap<>();
 
diff --git a/protocol/src/main/java/com/zfoo/protocol/IPacket.java b/protocol/src/main/java/com/zfoo/protocol/IPacket.java
index f6c9f476..cf3ddf90 100644
--- a/protocol/src/main/java/com/zfoo/protocol/IPacket.java
+++ b/protocol/src/main/java/com/zfoo/protocol/IPacket.java
@@ -23,9 +23,15 @@ public interface IPacket {
 
     /**
      * 这个类的协议号
+     * <p>
+     * 子类可以不用重写这个方法，也能够通过反射自动获取到PROTOCOL_ID这个协议号，序列化一次对象只会调用一次，性能损失很小
+     * <p>
+     * 重写这个方法，使用多态获取协议号，可以提高一点性能
      *
      * @return 协议号Id
      */
-    short protocolId();
+    default short protocolId() {
+        return ProtocolManager.getProtocolIdByClass(this.getClass());
+    }
 
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java b/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java
index e549fb47..1a974245 100644
--- a/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java
+++ b/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java
@@ -18,12 +18,11 @@ import com.zfoo.protocol.registration.IProtocolRegistration;
 import com.zfoo.protocol.registration.ProtocolAnalysis;
 import com.zfoo.protocol.registration.ProtocolModule;
 import com.zfoo.protocol.util.AssertionUtils;
+import com.zfoo.protocol.util.ReflectionUtils;
 import com.zfoo.protocol.xml.XmlProtocols;
 import io.netty.buffer.ByteBuf;
 
-import java.lang.reflect.Field;
 import java.util.Arrays;
-import java.util.Comparator;
 import java.util.Objects;
 import java.util.Set;
 
@@ -87,16 +86,21 @@ public class ProtocolManager {
         return moduleOptional.get();
     }
 
+    public static short getProtocolIdByClass(Class<?> clazz) {
+        var protocolIdField = ReflectionUtils.getFieldByNameInPOJOClass(clazz, PROTOCOL_ID);
+        return (short) ReflectionUtils.getField(protocolIdField, null);
+    }
+
     public static void initProtocol(Set<Class<?>> protocolClassSet) {
         ProtocolAnalysis.analyze(protocolClassSet, GenerateOperation.NO_OPERATION);
     }
 
     public static void initProtocol(Set<Class<?>> protocolClassSet, GenerateOperation generateOperation) {
-        ProtocolAnalysis.analyze(protocolClassSet,  generateOperation);
+        ProtocolAnalysis.analyze(protocolClassSet, generateOperation);
     }
 
     public static void initProtocol(XmlProtocols xmlProtocols, GenerateOperation generateOperation) {
-        ProtocolAnalysis.analyze(xmlProtocols,  generateOperation);
+        ProtocolAnalysis.analyze(xmlProtocols, generateOperation);
     }
 
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java b/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java
index 4b5354ab..8938b352 100644
--- a/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java
+++ b/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java
@@ -402,12 +402,6 @@ public class ProtocolAnalysis {
         throw new RunException("[type:{}]类型不正确", type);
     }
 
-    public static short getProtocolIdByClass(Class<?> clazz) {
-        var protocolIdField = ReflectionUtils.getFieldByNameInPOJOClass(clazz, PROTOCOL_ID);
-        ReflectionUtils.makeAccessible(protocolIdField);
-        return (short) ReflectionUtils.getField(protocolIdField, null);
-    }
-
 
     /**
      * 此方法仅在生成协议的时候调用，一旦运行，不能调用
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/GenerateProtobufUtils.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/GenerateProtobufUtils.java
index df000cc2..8bbf3ff6 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/GenerateProtobufUtils.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/GenerateProtobufUtils.java
@@ -21,7 +21,6 @@ import com.zfoo.protocol.generate.GenerateOperation;
 import com.zfoo.protocol.generate.GenerateProtocolDocument;
 import com.zfoo.protocol.model.Pair;
 import com.zfoo.protocol.registration.IProtocolRegistration;
-import com.zfoo.protocol.registration.ProtocolAnalysis;
 import com.zfoo.protocol.registration.ProtocolRegistration;
 import com.zfoo.protocol.registration.field.*;
 import com.zfoo.protocol.serializer.reflect.*;
@@ -122,7 +121,7 @@ public abstract class GenerateProtobufUtils {
         for (var protos : xmlProtobuf.getProtos()) {
             for (var protocol : protos.getProtocols()) {
                 var protocolClass = Class.forName(protocol.getLocation());
-                var protocolId = ProtocolAnalysis.getProtocolIdByClass(protocolClass);
+                var protocolId = ProtocolManager.getProtocolIdByClass(protocolClass);
                 var protocolRegistration = ProtocolManager.getProtocol(protocolId);
 
                 if (allGenerateProtocols.contains(protocolRegistration)) {
@@ -189,7 +188,7 @@ public abstract class GenerateProtobufUtils {
 
             for (var protocol : protos.getProtocols()) {
                 var protocolClass = Class.forName(protocol.getLocation());
-                var protocolId = ProtocolAnalysis.getProtocolIdByClass(protocolClass);
+                var protocolId = ProtocolManager.getProtocolIdByClass(protocolClass);
                 var protocolRegistration = ProtocolManager.getProtocol(protocolId);
 
                 var protocolDocument = GenerateProtocolDocument.getProtocolDocument(protocolId);