These files are the data and result files for the manuscript entitled 'Hydraulic Fracturing Induced Seismicity in the Changning Shale Gas Field: Evidence From 3-D Seismic Velocity Structure and Pore Pressure Field Models' by Tan et al., including station.dat : the station coordinates of the local seismic network (including the station ID, longitude, latitude, elevation(negative)/depth(positive), X, Y) catalog.dat : the seismic phase catalog used in double-difference (DD) seismic tomography relocation.dat : the earthquake relocations obtained by DD tomography 1-D Vs.xlsx : the 1-D Vs model in the shale gas field 3-D Vp.dat: the 3-D Vp model obtained by DD tomography 3-D Vs.dat: the 3-D Vs model obtained by DD tomography 3-D VpVs.sgy: the 3-D Vp/Vs model (interpolated, within 3-5 km) 3-D pressure.sgy: the 3-D pore pressure field model (interpolated, within 3-5 km)