Abstract: Focus on the scientific problem that the working face cutting roof induced by coal pillars stress concentration in overlying coal mine goaf causes support pushed down, the control method of using underground borehole to blast concentrated coal pillar in overlying goaf was optimized and proposed, and a comprehensive systematical effect evaluation method was constructed within the methods of the micro seismic monitoring, the strata displacement monitoring, surface cracks or subsidence observation and mine pressure monitoring. The results showed that the underground borehole blasting control method had obvious advantages in technical and economic aspects compared with the grouting method, the shortening working face method and ground borehole blasting control method. After blasting control of overlying coal mine goaf, the number of micro seismic events (42) and energy （1.21×10⁶ J）increased significantly; the overlying strata appeared relatively uniform subsidence, and the surface cracks moved forward continually and the pressure step changed normally. The risks of cutting roof and crashed support were relieved. So the coal mine production can be safely ensured.