Abstract: In order to study the stress evaluation laws of fault zone during mining, we use FLAC^3D numerical simulation software and orthogonal experiment method to simulate the evaluation laws of stress peak around fault with dip angle of 30°, 45°, 60°, 75°and fault throw of 6,10,20,30 m based on the geological data in Shandong Luxi Mine. The results show that the stress concentration around fault zone is greater than that on the footwall when open-off cut is located on the hanging wall mining; the stress peak grows with the increase of fault dip angle and fault throw; when the fault dip is 75°and fault throw is 30 m, the abutment pressure peak reaches 47.3 MPa; with the advancing of working face, the closer the distance between the longwall face and the fault, the greater the abutment stress and the higher the impact risk.