diff --git a/src/org/redkale/convert/MapDecoder.java b/src/org/redkale/convert/MapDecoder.java
index bf9e4d7fb..ebee7125d 100644
--- a/src/org/redkale/convert/MapDecoder.java
+++ b/src/org/redkale/convert/MapDecoder.java
@@ -5,7 +5,6 @@
  */
 package org.redkale.convert;
 
-import java.io.Serializable;
 import org.redkale.util.Creator;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
@@ -13,7 +12,6 @@ import java.util.Map;
 
 /**
  * Map的反序列化操作类 <br>
- * key、value的类型如果是Serializable， 会自动转换成String
  *
  * <p>
  * 详情见: https://redkale.org
@@ -50,8 +48,8 @@ public final class MapDecoder<K, V> implements Decodeable<Reader, Map<K, V>> {
                 this.valueType = pt.getActualTypeArguments()[1];
                 this.creator = factory.loadCreator((Class) pt.getRawType());
                 factory.register(type, this);
-                this.keyDecoder = factory.loadDecoder(this.keyType == Serializable.class ? String.class : this.keyType);
-                this.valueDecoder = factory.loadDecoder(this.valueType == Serializable.class ? String.class : this.valueType);
+                this.keyDecoder = factory.loadDecoder(this.keyType);
+                this.valueDecoder = factory.loadDecoder(this.valueType);
             } else {
                 throw new ConvertException("mapdecoder not support the type (" + type + ")");
             }
diff --git a/test/org/redkale/test/rest/HelloService.java b/test/org/redkale/test/rest/HelloService.java
index 84bd31cbd..02c6e60b7 100644
--- a/test/org/redkale/test/rest/HelloService.java
+++ b/test/org/redkale/test/rest/HelloService.java
@@ -1,6 +1,5 @@
 package org.redkale.test.rest;
 
-import java.io.Serializable;
 import java.util.*;
 import javax.annotation.Resource;
 import org.redkale.net.http.*;
@@ -73,7 +72,7 @@ public class HelloService implements Service {
 
     //查询List列表
     @RestMapping(name = "listmap")
-    public List<HelloEntity> queryHello(HelloBean bean, @RestParam(name = "map") Map<String, Serializable> map) { //通过 /pipes/hello/list?bean={...} 查询List列表
+    public List<HelloEntity> queryHello(HelloBean bean, @RestParam(name = "map") Map<String, String> map) { //通过 /pipes/hello/list?bean={...} 查询List列表
         System.out.println("map参数: " + map);
         if (source != null) return source.queryList(HelloEntity.class, bean);
         return null;