Using the historic seismic data and the fault properties，we calculate the regional peak ground acceleration ( PGA) in the study area with the spatial distributed seismicity model and segmented seismicity model in the probabilistic seismic hazard analysis ( PSHA) of Hengshui City． Considering the impact of the characteristics of the faults，we obtain the PGA distribution for 63%，10% and 5% P． E． in 50a of two scenario earthquake and find that the PGA for 10% and 5% in 50a increased visibly． It indicates that if the probability of exceedance is low，the seismic risk is greater in near-field region such as Shenzhou，Jizhou and the downtown of Hengshui City． The result shows that，the seismic activity model based on the instrumental earthquake catalogs with the characteristics of the faults reflects the contemporary seismic hazard level of Hengshui area．