Abstract: The vehicle-to-vehicle communication system in the internet of vehicle would play an extremely important role in future intelligent transportation system and become an indispensable part in future society. The average symbol error probability (ASEP) of vehicle-to-vehicle communication system employing transmit antenna selection (TAS) and orthogonal space-time block code (OSTBC) under double-Rayleigh fading channels is investigated in this paper. Based on the scalar additive white Gaussian noise (AWGN) channel approach, the exact form expressions of the signal-to-noise ratio (SNR) at the receiving end are derived for multiple quadrature amplitude modulation (MQAM), and multiple phase shift keying modulation (MPSK). Then the ASEP performance under different conditions was evaluated through numerical simulations. Simulation results show that: the ASEP performance can be improved with the increase of the number of transmit antennas or receive antennas, when SNR=6dB, the ASEP of (3,3;6) with QPSK is 2×10, (4,4;8) is 2×10, (5,5;10) is 2×10.