To study the effects of the Exponentiated Weibull atmosphere turbulence and pointing errors on the bit error rate(BER),BER performance of the optical communication link is investigated.The closed-form expression of BER is derived based on a Meijer′s G function.The relationship between the BER performance and the transmitting optical power under different parameters such as the atmosphere turbulence,PPM modulation order,the normalized jitter standard deviation and the normalized beam-width are analyzed by simulation.Simulation results show that the improvement effect of different modulation orders and increasing transmitting power on BER is almost the same,and BER increases with the increase of turbulence intensity,the normalized jitter standard deviation and the normalized beam-width.