Abstract: In order to solving the problem of pressure relief gas control in working face under the condition of high strength fully mechanized caving mining, the gas control problem of 12302 working face in Wangjialing Mine as the research object, and micro-seismic monitoring technology is used to monitor and record the micro-seismic events during the working face advancing, cooperate with the working face gas emission monitoring, the process of working face in advancing the rupture and fracture evolution of the upper strata are analyzed, and concluded that the micro seismic events and gas emitted from the quantitative characterization of relation.Then the layout parameters of high-level boreholes are adjusted, and the effect of borehole extraction after adjustment is tested.The results show that the periodic pressure step distance of 12302 working face is about 21 m, and the mining overburden fracture zone is mainly distributed on both sides of the goaf roof, with a height of about 55 m.The gas emission on the working face is linearly correlated with the frequency of micro-seismic events.The fitting formula is y=4.82+0.003 7x.According to this formula and the frequency of micro-seismic events obtained from monitoring, the gas emission on the working face can be predicted.After adjusting the layout parameters, the average extraction concentration and extraction purity of gas from the high-level borehole are 7.9% and 1.16 m³/min, and the extraction effect is better.