The main shock and aftershocks of the Luding M_S6.8 earthquake in Sichuan Province were relocated by applying the double-difference location algorithm using P-wave and S-wave arrival times from the catalog reports from September 5 to September 12,2022. Compared with the previous result,the earthquake sequence after the relocation is more concentrated and the linear trend is more obvious. The aftershocks which are mainly located in the west of the Xianshuihe fault generally distributed along the Xianshuihe fault in an NW direction with a long axis of about 65km. Based on the relocation results,the seismogenic fault is the Moxi-Shimian segment of the Xianshuihe fault,which the strike of this fault is 331°～340° with the steep dip angle. Affected by the Hailuogouduan faults in the SW direction,the aftershock zone has obvious segmentation characteristics,i.e. generally shallow in the northern section and deep in the southern section. With the evolution of time,the focal depth of the aftershocks in the central and southern sections gradually became shallower as the frequency of earthquakes attenuated,while the focal depth in the northern section did not change much as the frequency did not attenuate significantly. The activities of aftershocks at different periods show that the initial rupture direction of the event is in the SE direction,which then triggers an SW branch fault conjugated with the main fault. The aftershocks expand along these two faults till reaching a steady state.