diff --git a/NTK_NFY_Communication_Protocol.md b/NTK_NFY_Communication_Protocol.md
index dff6193..c305850 100644
--- a/NTK_NFY_Communication_Protocol.md
+++ b/NTK_NFY_Communication_Protocol.md
@@ -626,6 +626,8 @@ HEX: 5A 01 ID 21 00 00 00 00 00 crc16_L crc16_H A5
 | ID       | 设备ID      | uint8_t  |        |                    |
 | crc16    | crc16校验值 | uint16_t |        |                    |
 
+示例：`HEX: 5A 01 01 21 00 00 00 00 00 EE 5F A5`
+
 #### 6.2. 0x40 发送脑电信号采集到的原始值
 
 参考 4.3 节