diff --git a/src/main/java/org/redkale/convert/AnyEncoder.java b/src/main/java/org/redkale/convert/AnyEncoder.java
index 47f397310..0cbb98b59 100644
--- a/src/main/java/org/redkale/convert/AnyEncoder.java
+++ b/src/main/java/org/redkale/convert/AnyEncoder.java
@@ -28,7 +28,6 @@ public final class AnyEncoder<W extends Writer, T> implements Encodeable<W, T> {
     @SuppressWarnings("unchecked")
     public void convertTo(final W out, final T value) {
         if (value == null) {
-            out.writeClassName(null);
             out.writeNull();
         } else {
             Class clazz = value.getClass();
@@ -37,9 +36,6 @@ public final class AnyEncoder<W extends Writer, T> implements Encodeable<W, T> {
                 out.writeObjectE(value);
                 return;
             }
-            if (out.needWriteClassName()) {
-                out.writeClassName(factory.getEntityAlias(clazz));
-            }
             factory.loadEncoder(clazz).convertTo(out, value);
         }
     }
diff --git a/src/main/java/org/redkale/convert/ConvertEntity.java b/src/main/java/org/redkale/convert/ConvertEntity.java
deleted file mode 100644
index f1fa18cf8..000000000
--- a/src/main/java/org/redkale/convert/ConvertEntity.java
+++ /dev/null
@@ -1,33 +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.convert;
-
-import java.lang.annotation.*;
-import static java.lang.annotation.ElementType.TYPE;
-import static java.lang.annotation.RetentionPolicy.RUNTIME;
-
-/**
- * 用于类名的别名, 该值必须是全局唯一 <br>
- * 使用场景: 当自定义序列化为了不指定class可以使用@ConvertEntity来取个别名。 <br>
- * 关联方法: {@link org.redkale.convert.Reader#readClassName()} 和 {@link org.redkale.convert.Writer#writeClassName(java.lang.String) } 。
- *
- * <p>详情见: https://redkale.org
- *
- * @author zhangjx
- */
-@Inherited
-@Documented
-@Target({TYPE})
-@Retention(RUNTIME)
-public @interface ConvertEntity {
-
-    /**
-     * 别名值
-     *
-     * @return String
-     */
-    String value();
-}
diff --git a/src/main/java/org/redkale/convert/ConvertFactory.java b/src/main/java/org/redkale/convert/ConvertFactory.java
index 4293ae441..35a5dd4f9 100644
--- a/src/main/java/org/redkale/convert/ConvertFactory.java
+++ b/src/main/java/org/redkale/convert/ConvertFactory.java
@@ -53,8 +53,6 @@ public abstract class ConvertFactory<R extends Reader, W extends Writer> {
     // -----------------------------------------------------------------------------------
     private final ConcurrentHashMap<Class, Creator> creators = new ConcurrentHashMap();
 
-    private final ConcurrentHashMap<String, Class> entitys = new ConcurrentHashMap();
-
     private final ConcurrentHashMap<Type, Map<String, SimpledCoder<R, W, ?>>> fieldCoders = new ConcurrentHashMap();
 
     private final ConcurrentHashMap<Type, Decodeable<R, ?>> decoders = new ConcurrentHashMap();
@@ -765,185 +763,6 @@ public abstract class ConvertFactory<R extends Reader, W extends Writer> {
         return false;
     }
 
-    final String getEntityAlias(Class clazz) {
-        if (clazz == String.class) {
-            return "A";
-        }
-        if (clazz == int.class) {
-            return "I";
-        }
-        if (clazz == Integer.class) {
-            return "i";
-        }
-        if (clazz == long.class) {
-            return "J";
-        }
-        if (clazz == Long.class) {
-            return "j";
-        }
-        if (clazz == byte.class) {
-            return "B";
-        }
-        if (clazz == Byte.class) {
-            return "b";
-        }
-        if (clazz == boolean.class) {
-            return "Z";
-        }
-        if (clazz == Boolean.class) {
-            return "z";
-        }
-        if (clazz == short.class) {
-            return "S";
-        }
-        if (clazz == Short.class) {
-            return "s";
-        }
-        if (clazz == char.class) {
-            return "C";
-        }
-        if (clazz == Character.class) {
-            return "c";
-        }
-        if (clazz == float.class) {
-            return "F";
-        }
-        if (clazz == Float.class) {
-            return "f";
-        }
-        if (clazz == double.class) {
-            return "D";
-        }
-        if (clazz == Double.class) {
-            return "d";
-        }
-
-        if (clazz == String[].class) {
-            return "[A";
-        }
-        if (clazz == int[].class) {
-            return "[I";
-        }
-        if (clazz == long[].class) {
-            return "[J";
-        }
-        if (clazz == byte[].class) {
-            return "[B";
-        }
-        if (clazz == boolean[].class) {
-            return "[Z";
-        }
-        if (clazz == short[].class) {
-            return "[S";
-        }
-        if (clazz == char[].class) {
-            return "[C";
-        }
-        if (clazz == float[].class) {
-            return "[F";
-        }
-        if (clazz == double[].class) {
-            return "[D";
-        }
-
-        ConvertEntity ce = (ConvertEntity) clazz.getAnnotation(ConvertEntity.class);
-        if (ce != null && findEntityAlias(ce.value()) == null) {
-            entitys.put(ce.value(), clazz);
-        }
-        return ce == null ? clazz.getName() : ce.value();
-    }
-
-    final Class getEntityAlias(String name) {
-        if ("A".equals(name)) {
-            return String.class;
-        }
-        if ("I".equals(name)) {
-            return int.class;
-        }
-        if ("i".equals(name)) {
-            return Integer.class;
-        }
-        if ("J".equals(name)) {
-            return long.class;
-        }
-        if ("j".equals(name)) {
-            return Long.class;
-        }
-        if ("B".equals(name)) {
-            return byte.class;
-        }
-        if ("b".equals(name)) {
-            return Byte.class;
-        }
-        if ("Z".equals(name)) {
-            return boolean.class;
-        }
-        if ("z".equals(name)) {
-            return Boolean.class;
-        }
-        if ("S".equals(name)) {
-            return short.class;
-        }
-        if ("s".equals(name)) {
-            return Short.class;
-        }
-        if ("C".equals(name)) {
-            return char.class;
-        }
-        if ("c".equals(name)) {
-            return Character.class;
-        }
-        if ("F".equals(name)) {
-            return float.class;
-        }
-        if ("f".equals(name)) {
-            return Float.class;
-        }
-        if ("D".equals(name)) {
-            return double.class;
-        }
-        if ("d".equals(name)) {
-            return Double.class;
-        }
-
-        if ("[A".equals(name)) {
-            return String[].class;
-        }
-        if ("[I".equals(name)) {
-            return int[].class;
-        }
-        if ("[J".equals(name)) {
-            return long[].class;
-        }
-        if ("[B".equals(name)) {
-            return byte[].class;
-        }
-        if ("[Z".equals(name)) {
-            return boolean[].class;
-        }
-        if ("[S".equals(name)) {
-            return short[].class;
-        }
-        if ("[C".equals(name)) {
-            return char[].class;
-        }
-        if ("[F".equals(name)) {
-            return float[].class;
-        }
-        if ("[D".equals(name)) {
-            return double[].class;
-        }
-
-        Class clazz = findEntityAlias(name);
-        try {
-            return clazz == null
-                    ? Thread.currentThread().getContextClassLoader().loadClass(name)
-                    : clazz;
-        } catch (Exception ex) {
-            throw new ConvertException("convert entity is " + name, ex);
-        }
-    }
-
     ConvertFactory columnFactory(Type type, ConvertCoder[] coders, boolean encode) {
         if (Utility.isEmpty(coders)) {
             return this;
@@ -1144,11 +963,6 @@ public abstract class ConvertFactory<R extends Reader, W extends Writer> {
         return parent == null ? null : parent.findFieldFuncConsumer();
     }
 
-    private Class findEntityAlias(String name) {
-        Class clazz = entitys.get(name);
-        return parent == null ? clazz : parent.findEntityAlias(name);
-    }
-
     /**
      * 设置ColumnHandler初始化的处理函数
      *
diff --git a/src/main/java/org/redkale/convert/ObjectDecoder.java b/src/main/java/org/redkale/convert/ObjectDecoder.java
index 8577c4895..1aa3a060c 100644
--- a/src/main/java/org/redkale/convert/ObjectDecoder.java
+++ b/src/main/java/org/redkale/convert/ObjectDecoder.java
@@ -363,9 +363,6 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         if (clazz == null) {
             return null;
         }
-        if (!clazz.isEmpty()) {
-            return (T) factory.loadDecoder(factory.getEntityAlias(clazz)).convertFrom(in);
-        }
         if (this.creator == null) {
             if (typeClass.isInterface() || Modifier.isAbstract(typeClass.getModifiers())) {
                 throw new ConvertException(
diff --git a/src/main/java/org/redkale/convert/ObjectEncoder.java b/src/main/java/org/redkale/convert/ObjectEncoder.java
index 623fb1bf2..77b55ad98 100644
--- a/src/main/java/org/redkale/convert/ObjectEncoder.java
+++ b/src/main/java/org/redkale/convert/ObjectEncoder.java
@@ -331,9 +331,6 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
         }
         if (value.getClass() != this.typeClass && !this.type.equals(out.specificObjectType())) {
             final Class clz = value.getClass();
-            if (out.needWriteClassName()) {
-                out.writeClassName(factory.getEntityAlias(clz));
-            }
             factory.loadEncoder(clz).convertTo(out, value);
             return;
         }
diff --git a/src/main/java/org/redkale/convert/Reader.java b/src/main/java/org/redkale/convert/Reader.java
index a53fb0610..6c5747f1a 100644
--- a/src/main/java/org/redkale/convert/Reader.java
+++ b/src/main/java/org/redkale/convert/Reader.java
@@ -191,13 +191,6 @@ public abstract class Reader {
      */
     public abstract String readStandardString();
 
-    /**
-     * 读取反解析对象的类名
-     *
-     * @return 类名
-     */
-    public abstract String readClassName();
-
     /**
      * 读取一个String值
      *
diff --git a/src/main/java/org/redkale/convert/Writer.java b/src/main/java/org/redkale/convert/Writer.java
index e47e1b106..7d44d0c82 100644
--- a/src/main/java/org/redkale/convert/Writer.java
+++ b/src/main/java/org/redkale/convert/Writer.java
@@ -95,20 +95,6 @@ public abstract class Writer {
     /** 输出null值 */
     public abstract void writeNull();
 
-    /**
-     * 是否需要写入类名, JSON不需要
-     *
-     * @return boolean
-     */
-    public abstract boolean needWriteClassName();
-
-    /**
-     * 写入类名
-     *
-     * @param clazz 类名
-     */
-    public abstract void writeClassName(String clazz);
-
     /**
      * 输出一个为null的对象
      *
@@ -116,7 +102,6 @@ public abstract class Writer {
      */
     @ClassDepends
     public final void writeObjectNull(final Class clazz) {
-        writeClassName(null);
         writeNull();
     }
 
diff --git a/src/main/java/org/redkale/convert/json/JsonReader.java b/src/main/java/org/redkale/convert/json/JsonReader.java
index da71f7aee..d3c0f4b14 100644
--- a/src/main/java/org/redkale/convert/json/JsonReader.java
+++ b/src/main/java/org/redkale/convert/json/JsonReader.java
@@ -384,11 +384,6 @@ public class JsonReader extends Reader {
         return true;
     }
 
-    @Override
-    public final String readClassName() {
-        return null;
-    }
-
     /**
      * 读取一个int值
      *
diff --git a/src/main/java/org/redkale/convert/json/JsonWriter.java b/src/main/java/org/redkale/convert/json/JsonWriter.java
index 2dc1a5049..2cbb719dd 100644
--- a/src/main/java/org/redkale/convert/json/JsonWriter.java
+++ b/src/main/java/org/redkale/convert/json/JsonWriter.java
@@ -215,14 +215,6 @@ public abstract class JsonWriter extends Writer {
         writeLatin1To(false, String.valueOf(value));
     }
 
-    @Override
-    public final boolean needWriteClassName() {
-        return false;
-    }
-
-    @Override
-    public final void writeClassName(String clazz) {}
-
     @Override
     public final void writeObjectB(Object obj) {
         super.writeObjectB(obj);
diff --git a/src/main/java/org/redkale/convert/pb/ProtobufReader.java b/src/main/java/org/redkale/convert/pb/ProtobufReader.java
index 23353cd9b..0061d060f 100644
--- a/src/main/java/org/redkale/convert/pb/ProtobufReader.java
+++ b/src/main/java/org/redkale/convert/pb/ProtobufReader.java
@@ -396,11 +396,6 @@ public class ProtobufReader extends Reader {
         return data;
     }
 
-    @Override
-    public final String readClassName() {
-        return "";
-    }
-
     @Override
     public final String readStandardString() {
         return readString();
diff --git a/src/main/java/org/redkale/convert/pb/ProtobufWriter.java b/src/main/java/org/redkale/convert/pb/ProtobufWriter.java
index a8d163ea7..8a6612189 100644
--- a/src/main/java/org/redkale/convert/pb/ProtobufWriter.java
+++ b/src/main/java/org/redkale/convert/pb/ProtobufWriter.java
@@ -193,16 +193,6 @@ public abstract class ProtobufWriter extends Writer {
         // do nothing
     }
 
-    @Override
-    public final boolean needWriteClassName() {
-        return false;
-    }
-
-    @Override
-    public final void writeClassName(String clazz) {
-        // do nothing
-    }
-
     @Override
     @ClassDepends
     public final void writeObjectB(Object obj) {
diff --git a/src/test/java/org/redkale/test/convert/SimpleChildEntity.java b/src/test/java/org/redkale/test/convert/SimpleChildEntity.java
index 08a180e89..1b73dfd9c 100644
--- a/src/test/java/org/redkale/test/convert/SimpleChildEntity.java
+++ b/src/test/java/org/redkale/test/convert/SimpleChildEntity.java
@@ -7,10 +7,8 @@ package org.redkale.test.convert;
 
 import java.net.*;
 import java.util.*;
-import org.redkale.convert.ConvertEntity;
 
 /** @author zhangjx */
-@ConvertEntity("myname")
 public class SimpleChildEntity extends SimpleEntity {
 
     private short st = -1234;