Abstract. With the development of Intelligent Transport System (ITS), IEEE802.11p has just been approved as an international standard. However there are still challenging problems to be solved, for example high Doppler frequency shift and high speed hand-off. This paper proposed a method to establish a test platform based on GNU Radio and USRP1.1 to facilitate us further study in this field. The test platform established by us has been verified in two scenarios: low level TCP/IP communication and chat software IPTUX. The results show the test platform established in this paper works well and the average time consumed is 25.15ms for software processing reasons.