Based on the elastic dislocation theory of fault and the inhomogeneous model of fault slip

the ground deformation of earthquake caused by three different active patterns of fault—normal fault

thrust fault and strike-slip fault—was calculated with the 3-D finite element method to analyze their regularity as well as their influence due to the magnitude of earthquake and the angle of fault dip.The research results indicate that there are many factors affecting the ground deformation of earthquake

such as the conditions of geological structures

the features of rock strata

the active intensity of faults

the angle of fault dips

and the stress field of regional geology;however

the regularity of ground deformation is finally determined by the active pattern of fault while the scale of ground deformation by the active intensity of fault

and the rest of the factors are local and only affect the local torsion of the ground deformation.The regularity of ground deformation of earthquake due to different active patterns of faults can be a bench mark for the seismic study as well as the earthquake designing and preventative strengthening of buildings near active faults.