Abstract: In this paper, we studyed the basic principle、demolition parameter and demolition technical process of break-tip blast,formulated the demolition plan of the break-tip blast, and succeeded implements the blast. The stress monitor indicated that the roof advanced break-tip blast destroyed the structure of roof key layer, increased the roof crevasse degree, improved the distributed characteristic of stress field caused by mining. It not only released stress and discharge pressure, but also reduced the store energy condition, avoided stress concentration and energy accumulation, prevented and controled the rock-burst effectively.