Abstract: Considering the problem that synchronization accuracy will decrease when timing frequency is offset, this paper proposed an improving method which a sliding window processing is added on the basis of this algorithm, can effectively reduce the number of synchronous sampling points, and improves timing error tracking accuracy. The simulation results show that the improved algorithm can reduce the mean square error of timing tracking significantly in the case of timing frequency offset, and is suitable for BPSK, QPSK, QAM and other modulation modes, which can meet the application requirements of wireless burst communication.