A M_S6.4 earthquake occurred at Menyuan county,Haibei city,Qinghai province,China on January 21,2016.The Northwestern Strong Motion Network Center collected 70 groups of three-component acceleration records of this earthquake.The characteristics of these records were then analyzed,including the spatial locations of the stations,and 207 peak ground accelerations (PGAs),recorded by the strong motion stations,were calculated after the zero baseline was corrected.In this study,we analyzed the attenuation tendencies of the PGAs with respect to the epicentral distance,and drew a contour map of the horizontal PGAs.We selected the acceleration records of some typical stations,and plotted the acceleration,velocity,and displacement time-history curves,as well as the acceleration response spectra.The study results provide an important reference for seismic damage investigation in Western China.