The invention discloses a fracture relieving method for stress concentration of a pillar left in an overlying goaf. The method comprises the following steps: first, fracturing a top plate directionally to optimize the stress of the top plate to reduce the source of a force; second, fracturing the pillar with pulse to generate a gap network so as to weaken the rigidity of the pillar and reduce thebearing capacity of the pillar; and finally, fracturing a rock stratum of a bottom plate of the pillar with pulse to weaken the ability of transferring stress concentration. Fracture drill holes are separately constructed in a spaced manner in the direction of the pillar of the oblique upper goaf of a lane to set depths by means of a drilling machine, the top plate, the pillar and the bottom platecan be fractured by way of retracting section with one oblique fracturing hole, and the directional fracturing position of the top plate is about 1m in the middle of the upper side of the pillar. Thewidth of the lower pillar is reduced by means of the method, the extraction rate of coal is improved, and deformation of the coal lane in the lower layer is reduced, so that the rock pressure problemof the pillar of the working face of the lower coal layer and coal and gas outburst problem during rock burst and lower coal mining are solved. Meanwhile, the method is high in safety coefficient, simple, convenient to construct and low in cost.