Abstract: Using numerical simulation software FLAC3.0^3D, the contact surface element is used to simulate the fault footwall structure, and the effect of mine pressure distribution and fault displacement variation during the coal mining operation from the footwall to the fault plane. The result shows that the displacement change when the distance of footwall face from the fault plane is decrease during the advancing in normal fault structure; fault stress changes affected by coal mining on the surface of activated scope is 40 m in front of the fault; shear stress and normal stress increase with the increase of working face advancing gradually; the change of shear stress is higher than normal stress; the closer distance from fault plane, the greater rock burst induced.