Abstract: Aiming at the feature that the mining roadway is arranged under the pillar of overlying coal seam,numerical simulation of the stress distribution in stress concentration zone of the 031604 fully mechanized caving face and the 031604 working face the roadway and coal pillars of the overlying 9# and 12# coal seams using FLAC3D numerical simulation technology,through the numerical simulation, the stress distribution law of mining face under coal pillar under overlying coal seam is studied and analyzed in detail and take targeted preventive measures to ensure safe and efficient mining of the work surface.