Abstract: Under the influence of fault，forms and the stress distribution of the overburden rock will change.To analyze the effect of fault on the stress evolution law of coal face with FLAC^3D numerical calculation method，the fault occurrence characteristics of a mine as engineering background，the simulation analysis of the footwall face normal fault efforts to promote the advance abutment pressure and the elastic strain energy in the process of distribution.The results show that the fault block of strata stress significantly. As working face close to the fault，advance abutment pressure and the elastic strain energy increased significantly; vertical stress and elastic strain energy accumulation near the fault，easy to induce impact ground pressure.The study of similar geological conditions of the prediction and prevention of percussive ground pressure of coal seam play a guiding role.