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 cd3eda11..a35199cc 100644
--- a/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java
+++ b/orm/src/main/java/com/zfoo/orm/lpmap/FileChannelMap.java
@@ -64,7 +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 = ProtocolManager.getProtocolIdByClass(clazz);
+            var protocolId = ProtocolManager.protocolId(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 2e61f95d..579a6793 100644
--- a/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java
+++ b/orm/src/main/java/com/zfoo/orm/lpmap/FileHeapMap.java
@@ -46,7 +46,7 @@ public class FileHeapMap<V extends IPacket> implements LpMap<V> {
         try {
             this.dbFile = FileUtils.getOrCreateFile(dbPath, StringUtils.format("{}.db", clazz.getSimpleName()));
 
-            var protocolId = ProtocolManager.getProtocolIdByClass(clazz);
+            var protocolId = ProtocolManager.protocolId(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 cf3ddf90..d96d80c3 100644
--- a/protocol/src/main/java/com/zfoo/protocol/IPacket.java
+++ b/protocol/src/main/java/com/zfoo/protocol/IPacket.java
@@ -31,7 +31,7 @@ public interface IPacket {
      * @return 协议号Id
      */
     default short protocolId() {
-        return ProtocolManager.getProtocolIdByClass(this.getClass());
+        return ProtocolManager.protocolId(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 1a974245..d7750c81 100644
--- a/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java
+++ b/protocol/src/main/java/com/zfoo/protocol/ProtocolManager.java
@@ -18,13 +18,10 @@ 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.util.Arrays;
-import java.util.Objects;
-import java.util.Set;
+import java.util.*;
 
 /**
  * @author jaysunxiao
@@ -39,6 +36,8 @@ public class ProtocolManager {
     public static final IProtocolRegistration[] protocols = new IProtocolRegistration[MAX_PROTOCOL_NUM];
     public static final ProtocolModule[] modules = new ProtocolModule[MAX_MODULE_NUM];
 
+    private static final Map<Class<?>, Short> protocolIdMap = new HashMap<>();
+
     static {
         // 初始化默认协议模块
         modules[0] = ProtocolModule.DEFAULT_PROTOCOL_MODULE;
@@ -86,9 +85,15 @@ 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 short protocolId(Class<?> clazz) {
+        var protocolId = protocolIdMap.get(clazz);
+        if (protocolId == null) {
+            protocolId = ProtocolAnalysis.getProtocolIdByClass(clazz);
+            synchronized (protocolIdMap) {
+                protocolIdMap.put(clazz, protocolId);
+            }
+        }
+        return protocolId;
     }
 
     public static void initProtocol(Set<Class<?>> protocolClassSet) {
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 8938b352..e0f82304 100644
--- a/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java
+++ b/protocol/src/main/java/com/zfoo/protocol/registration/ProtocolAnalysis.java
@@ -435,6 +435,11 @@ public class ProtocolAnalysis {
         return allSubProtocolIdSet;
     }
 
+    public static short getProtocolIdByClass(Class<?> clazz) {
+        var protocolIdField = ReflectionUtils.getFieldByNameInPOJOClass(clazz, PROTOCOL_ID);
+        return (short) ReflectionUtils.getField(protocolIdField, null);
+    }
+
     // 协议智能语法分析，错误的协议定义将无法启动程序并给出错误警告
     //-----------------------------------------------------------------------
 
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 8bbf3ff6..df000cc2 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
@@ -21,6 +21,7 @@ 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.*;
@@ -121,7 +122,7 @@ public abstract class GenerateProtobufUtils {
         for (var protos : xmlProtobuf.getProtos()) {
             for (var protocol : protos.getProtocols()) {
                 var protocolClass = Class.forName(protocol.getLocation());
-                var protocolId = ProtocolManager.getProtocolIdByClass(protocolClass);
+                var protocolId = ProtocolAnalysis.getProtocolIdByClass(protocolClass);
                 var protocolRegistration = ProtocolManager.getProtocol(protocolId);
 
                 if (allGenerateProtocols.contains(protocolRegistration)) {
@@ -188,7 +189,7 @@ public abstract class GenerateProtobufUtils {
 
             for (var protocol : protos.getProtocols()) {
                 var protocolClass = Class.forName(protocol.getLocation());
-                var protocolId = ProtocolManager.getProtocolIdByClass(protocolClass);
+                var protocolId = ProtocolAnalysis.getProtocolIdByClass(protocolClass);
                 var protocolRegistration = ProtocolManager.getProtocol(protocolId);
 
                 var protocolDocument = GenerateProtocolDocument.getProtocolDocument(protocolId);