diff --git a/src/test/java/org/redkale/test/convert/BiFunctionConvertTest.java b/src/test/java/org/redkale/test/convert/BiFunctionConvertTest.java
new file mode 100644
index 000000000..8825bf0ae
--- /dev/null
+++ b/src/test/java/org/redkale/test/convert/BiFunctionConvertTest.java
@@ -0,0 +1,79 @@
+/*
+ * 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.test.convert;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.redkale.convert.ConvertField;
+import org.redkale.convert.json.JsonConvert;
+import org.redkale.util.Attribute;
+
+/*
+ * test
+ *
+ * @author zhangjx
+ */
+public class BiFunctionConvertTest {
+
+    public static class GamePlayer {
+
+        public int userid;
+
+        public String username;
+
+        public int[] cards;
+    }
+
+    public static class GameTable {
+
+        public int tableid;
+
+        public GamePlayer[] players;
+    }
+
+    @Test
+    public void run() throws Throwable {
+        GamePlayer player1 = new GamePlayer();
+        player1.userid = 1;
+        player1.username = "玩家1";
+        player1.cards = new int[] {11, 12, 13, 14, 15};
+        GamePlayer player2 = new GamePlayer();
+        player2.userid = 2;
+        player2.username = "玩家2";
+        player2.cards = new int[] {21, 22, 23, 24, 25};
+        GamePlayer player3 = new GamePlayer();
+        player3.userid = 3;
+        player3.username = "玩家3";
+        player3.cards = new int[] {31, 32, 33, 34, 35};
+        GameTable table = new GameTable();
+        table.tableid = 100;
+        table.players = new GamePlayer[] {player1, player2, player3};
+        JsonConvert convert1 = JsonConvert.root();
+        System.out.println(convert1.convertTo(table));
+        JsonConvert convert2 = convert1.newConvert(
+                (Attribute t, Object u) -> {
+                    if (t.field().equals("cards") && u instanceof GamePlayer) {
+                        int userid = ((GamePlayer) u).userid;
+                        if (userid == 3) return null; // 玩家3的cards不输出
+                        return t.get(u);
+                    }
+                    return t.get(u);
+                },
+                (Object u) -> {
+                    if (table != u) return null;
+                    // return new ConvertField[]{new ConvertField("extcol1", 30),
+                    // new ConvertField("extcol2", "扩展字段值")};
+                    return ConvertField.ofArray("extcol1", 30, "extcol2", "扩展字段值");
+                });
+        System.out.println(convert2.convertTo(table));
+        Assertions.assertEquals(
+                "{\"players\":[{\"cards\":[11,12,13,14,15],\"userid\":1,\"username\":\"玩家1\"},"
+                        + "{\"cards\":[21,22,23,24,25],\"userid\":2,\"username\":\"玩家2\"},"
+                        + "{\"userid\":3,\"username\":\"玩家3\"}],"
+                        + "\"tableid\":100,\"extcol1\":30,\"extcol2\":\"扩展字段值\"}",
+                convert2.convertTo(table));
+    }
+}