diff --git a/src/main/java/org/redkale/boot/NodeServer.java b/src/main/java/org/redkale/boot/NodeServer.java
index 1c707e4c9..95edbdcc4 100644
--- a/src/main/java/org/redkale/boot/NodeServer.java
+++ b/src/main/java/org/redkale/boot/NodeServer.java
@@ -451,7 +451,7 @@ public abstract class NodeServer {
             if (!Modifier.isPublic(serviceImplClass.getModifiers())) {
                 continue;
             }
-            if (serviceImplClass.getAnnotation(SncpDyn.class) != null) {
+            if (Sncp.isSncpDyn(serviceImplClass)) {
                 continue; //动态生成的跳过
             }
             if (entry.isExpect()) {
diff --git a/src/main/java/org/redkale/net/sncp/Sncp.java b/src/main/java/org/redkale/net/sncp/Sncp.java
index 7cd64280e..fdf2ab41e 100644
--- a/src/main/java/org/redkale/net/sncp/Sncp.java
+++ b/src/main/java/org/redkale/net/sncp/Sncp.java
@@ -5,7 +5,10 @@
  */
 package org.redkale.net.sncp;
 
-import java.lang.annotation.Annotation;
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+import java.lang.annotation.*;
 import java.lang.reflect.*;
 import java.net.InetSocketAddress;
 import java.nio.ByteBuffer;
@@ -54,6 +57,29 @@ public abstract class Sncp {
         md5 = d;
     }
 
+    /**
+     * 修饰由SNCP协议动态生成的class、和method
+     * 本地模式：动态生成的_DynLocalXXXXService类会打上@SncpDyn(remote = false) 的注解
+     * 远程模式：动态生成的_DynRemoteXXXService类会打上@SncpDyn(remote = true) 的注解
+     *
+     * <p>
+     * 详情见: https://redkale.org
+     *
+     * @author zhangjx
+     */
+    @Inherited
+    @Documented
+    @Target({METHOD, TYPE})
+    @Retention(RUNTIME)
+    public static @interface SncpDyn {
+
+        boolean remote();
+
+        Class type();
+
+        int index() default 0;  //排列顺序， 主要用于Method
+    }
+
     private Sncp() {
     }
 
@@ -116,6 +142,10 @@ public abstract class Sncp {
         return service.getClass().getAnnotation(SncpDyn.class) != null;
     }
 
+    public static boolean isSncpDyn(Class serviceType) {
+        return serviceType.getAnnotation(SncpDyn.class) != null;
+    }
+
     public static int getVersion(Service service) {
         if (service == null) {
             return -1;
@@ -398,6 +428,7 @@ public abstract class Sncp {
         {
             av0 = cw.visitAnnotation(sncpDynDesc, true);
             av0.visit("remote", Boolean.FALSE);
+            av0.visit("type", Type.getType(Type.getDescriptor(serviceImplClass)));
             av0.visitEnd();
         }
         { //给新类加上 原有的Annotation
@@ -719,6 +750,7 @@ public abstract class Sncp {
         {
             av0 = cw.visitAnnotation(sncpDynDesc, true);
             av0.visit("remote", Boolean.TRUE);
+            av0.visit("type", Type.getType(Type.getDescriptor(serviceTypeOrImplClass)));
             av0.visitEnd();
         }
         { //给新类加上 原有的Annotation
diff --git a/src/main/java/org/redkale/net/sncp/SncpClient.java b/src/main/java/org/redkale/net/sncp/SncpClient.java
index 83e6714f0..d5940e329 100644
--- a/src/main/java/org/redkale/net/sncp/SncpClient.java
+++ b/src/main/java/org/redkale/net/sncp/SncpClient.java
@@ -18,6 +18,7 @@ import org.redkale.convert.bson.*;
 import org.redkale.convert.json.*;
 import org.redkale.mq.*;
 import org.redkale.net.*;
+import org.redkale.net.sncp.Sncp.SncpDyn;
 import static org.redkale.net.sncp.SncpRequest.*;
 import static org.redkale.net.sncp.SncpResponse.fillRespHeader;
 import org.redkale.service.*;
diff --git a/src/main/java/org/redkale/net/sncp/SncpDyn.java b/src/main/java/org/redkale/net/sncp/SncpDyn.java
deleted file mode 100644
index d64de39f5..000000000
--- a/src/main/java/org/redkale/net/sncp/SncpDyn.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
- */
-package org.redkale.net.sncp;
-
-import java.lang.annotation.*;
-import static java.lang.annotation.ElementType.*;
-import static java.lang.annotation.RetentionPolicy.RUNTIME;
-
-/**
- * 修饰由SNCP协议动态生成的class、和method
- * 本地模式：动态生成的_DynLocalXXXXService类会打上&#64;SncpDyn(remote = false) 的注解
- * 远程模式：动态生成的_DynRemoteXXXService类会打上&#64;SncpDyn(remote = true) 的注解
- *
- * <p> 详情见: https://redkale.org
- * @author zhangjx
- */
-@Inherited
-@Documented
-@Target({METHOD, TYPE})
-@Retention(RUNTIME)
-public @interface SncpDyn {
-
-    boolean remote();
-
-    int index() default 0;  //排列顺序， 主要用于Method
-}
diff --git a/src/main/java/org/redkale/net/sncp/SncpServer.java b/src/main/java/org/redkale/net/sncp/SncpServer.java
index a48365d7c..07d28df99 100644
--- a/src/main/java/org/redkale/net/sncp/SncpServer.java
+++ b/src/main/java/org/redkale/net/sncp/SncpServer.java
@@ -99,12 +99,15 @@ public class SncpServer extends Server<Uint128, SncpContext, SncpRequest, SncpRe
      * @return SncpServlet
      */
     public SncpServlet removeSncpServlet(Service sncpService) {
+        if (!Sncp.isSncpDyn(sncpService)) {
+            throw new SncpException(sncpService + " is not sncp dynamic-gen service");
+        }
         return ((SncpDispatcherServlet) this.dispatcher).removeSncpServlet(sncpService);
     }
 
     public SncpDynServlet addSncpServlet(Service sncpService) {
         if (!Sncp.isSncpDyn(sncpService)) {
-            return null;
+            throw new SncpException(sncpService + " is not sncp dynamic-gen service");
         }
         SncpDynServlet sds = new SncpDynServlet(BsonFactory.root().getConvert(), Sncp.getResourceName(sncpService),
             Sncp.getResourceType(sncpService), sncpService, maxTypeLength, maxNameLength);
diff --git a/src/main/java/org/redkale/util/ResourceFactory.java b/src/main/java/org/redkale/util/ResourceFactory.java
index c7307b970..1d28534a3 100644
--- a/src/main/java/org/redkale/util/ResourceFactory.java
+++ b/src/main/java/org/redkale/util/ResourceFactory.java
@@ -927,7 +927,11 @@ public final class ResourceFactory {
                         field.set(srcObj, rs);
                     }
                     if (rs == null && !skipCheckRequired && rc1 != null && rc1.required()) {
-                        throw new ResourceInjectException("resource(type=" + field.getType().getSimpleName() + ".class, field=" + field.getName() + ", name='" + rcname + "') must exists in " + srcObj.getClass().getName());
+                        String t = srcObj.getClass().getName();
+                        if (srcObj.getClass().getSimpleName().startsWith("_Dyn")) {
+                            t = srcObj.getClass().getSuperclass().getName();
+                        }
+                        throw new ResourceInjectException("resource(type=" + field.getType().getSimpleName() + ".class, field=" + field.getName() + ", name='" + rcname + "') must exists in " + t);
                     }
                 }
             } while ((clazz = clazz.getSuperclass()) != Object.class);