diff --git a/src/main/java/component/Payload.java b/src/main/java/component/Payload.java
index 8f758a3..f31bf8e 100644
--- a/src/main/java/component/Payload.java
+++ b/src/main/java/component/Payload.java
@@ -16,6 +16,9 @@ public class Payload implements TlvComponentBase,InitialAble, IEncodingAble {
     // 成员变量
     private byte[] value;
 
+    public Payload(){
+    }
+
     /**
      * 构造函数
      * @param block
diff --git a/src/main/java/encoding/Encoder.java b/src/main/java/encoding/Encoder.java
index 5b005d7..9c8efb8 100644
--- a/src/main/java/encoding/Encoder.java
+++ b/src/main/java/encoding/Encoder.java
@@ -16,6 +16,8 @@ public class Encoder {
     public boolean isEstimator;// 是否仅测量编码后的长度，而不实际进行编码
     public SizeT totalReserve; // 编码缓存数组的大小
 
+    public static final int MaxPacketSize=8800;
+
     /**
      * 编码测量初始化
      * @Description:
diff --git a/src/test/java/component/PayloadTest.java b/src/test/java/component/PayloadTest.java
new file mode 100644
index 0000000..97f932c
--- /dev/null
+++ b/src/test/java/component/PayloadTest.java
@@ -0,0 +1,56 @@
+package component;
+
+import encoding.*;
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/*
+ * @Author: Wang Feng
+ * @Description:
+ * @Version: 1.0.0
+ * @Date: 14:31 2021/3/25
+ * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
+ */
+public class PayloadTest {
+
+    @Test
+    public void TestCreatePayloadByBlock() throws BlockException {
+        byte[] buf={(byte)204, (byte)2, (byte)3, (byte)4, (byte)255};
+        Block block= Block.createBlockByBuffer(buf,false);
+        Payload payload=new Payload(block);
+        System.out.println(Arrays.toString(payload.getValue()));
+    }
+
+    @Test
+    public void TestPayload_SetValue() throws BlockException {
+        byte[] buf={(byte)204, (byte)2, (byte)3, (byte)4, (byte)255};
+        Block block= Block.createBlockByBuffer(buf,false);
+        Payload payload=new Payload(block);
+        System.out.println(Arrays.toString(payload.getValue()));
+        byte[] value={(byte)2, (byte)221, (byte)21, (byte)223};
+        payload.setValue(value);
+        System.out.println(Arrays.toString(payload.getValue()));
+    }
+
+    @Test
+    public void TestPayload_WireDecode() throws BlockException, EncoderException, ComponentException {
+        byte[] buf={(byte)204, (byte)2, (byte)3, (byte)4, (byte)255};
+        Block block= Block.createBlockByBuffer(buf,false);
+        Payload payload=new Payload(block);
+        System.out.println(Arrays.toString(payload.getValue()));
+        byte[] value={(byte)2, (byte)221, (byte)21, (byte)223};
+        payload.setValue(value);
+        System.out.println(Arrays.toString(payload.getValue()));
+        Encoder encoder=new Encoder();
+        encoder.encoderReset(new SizeT(Encoder.MaxPacketSize),new SizeT(0));
+        payload.wireEncode(encoder);
+        byte[] payBuffer=encoder.getBuffer();
+        System.out.println(Arrays.toString(payBuffer));
+        Block payBlock =Block.createBlockByBuffer(payBuffer,false);
+        payload.wireDecode(payBlock);
+        System.out.println(Arrays.toString(payload.getValue()));
+    }
+
+
+}