Traditional protocols are perplexed by complex testing equipment and long development cycle,thus are not appropriate for protocol testing and evaluation in a certain field of aerospace.The HDLC protocol has been widely used in applications demanding of high reliability because of its excellent performance.Here,we propose a scheme to build HDLC protocol transceiver based on LabVIEW software,with the aim of rapid system integration and flexible configuration of protocol parameters.The HDLC core transceiver module is designed,on which a complete test system is formed.This paper introduces the HDLC protocol processing as well as the program design of receiving and sending,and elaborates the realization of the Cyclic Redundancy Check(CRC) module and the bit insert & delete module in the transceiver.Meanwhile,the main function modules of the transceiver are simulated and tested.The results show that the proposed HDLC transceiver is light in weight,efficient and flexible in operation.It can be applied to scenarios such as the testing of HDLC protocol equipment and protocol performance analysis to improve the data communication system in scalability,real-time performance and stability.