Abstract: Vibration could cause the relative position change of antenna and generate interference signals, which leads to the decline of communication quality. Based on the theoretical model of vibration antenna radiation, the influence of antenna vibration of quadrature phase shift keying (QPSK) system on communication performance is quantitatively analyzed for the first time in this paper. The expression of symbol error rate of antenna for QPSK system under vibration condition is derived and validated by computer simulation. The simulation results show that the performance of the digital communication system degrades as the increase of carrier frequency and antenna vibration acceleration, as the decrease of the vibration frequency. This study provides theoretical basis for the antenna structure design, installation and wireless communication network analysis and planning.