diff --git a/src/org/redkale/convert/ObjectDecoder.java b/src/org/redkale/convert/ObjectDecoder.java
index 6cda94c08..639c1c453 100644
--- a/src/org/redkale/convert/ObjectDecoder.java
+++ b/src/org/redkale/convert/ObjectDecoder.java
@@ -7,9 +7,7 @@ package org.redkale.convert;
 
 import org.redkale.util.Creator;
 import java.lang.reflect.*;
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.Set;
+import java.util.*;
 import org.redkale.util.*;
 
 /**
@@ -86,7 +84,7 @@ public final class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T
                 this.creator = factory.loadCreator(clazz);
                 if (this.creator == null) throw new ConvertException("Cannot create a creator for " + clazz);
             }
-            final Set<DeMember> list = new HashSet();
+            final Set<DeMember> list = new LinkedHashSet();
             final String[] cps = ObjectEncoder.findConstructorProperties(this.creator);
             try {
                 ConvertColumnEntry ref;
diff --git a/src/org/redkale/convert/ObjectEncoder.java b/src/org/redkale/convert/ObjectEncoder.java
index 9ae096f51..30ca1a21b 100644
--- a/src/org/redkale/convert/ObjectEncoder.java
+++ b/src/org/redkale/convert/ObjectEncoder.java
@@ -61,7 +61,7 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
             if (type == Object.class) return;
             //if (!(type instanceof Class)) throw new ConvertException("[" + type + "] is no a class");
             final Class clazz = this.typeClass;
-            final Set<EnMember> list = new HashSet();
+            final Set<EnMember> list = new LinkedHashSet();
             final boolean reversible = factory.isReversible();
             Creator creator = null;
             try {