The full extraction and non-full extraction was simulated using Flac3D software.The results indicate that under non-full extraction conditions the repetitive mining in lateral orientation induces the obvious increase of maximum ground subsidence and the change of the range of subsidence basin;and under full extraction conditions the repetitive mining in lateral orientation basically does not change the maximum ground subsidence and the coefficient of ground subsidence compared with initial mining,only changes the range and shape of subsidence basin.