Based on the deep mining of Changcun Mine, high gas in advancing and recovery working face, the main resource of gas in working face was analyzed, high roof drainage, incline high-position pumping roadway, B ventilation by even air pressure, coal seam permeability improvement strengthen drainage and other 3d network drainage way were adopted. The result showed that the average extraction rate of the working face was 40% or more, hundreds of meters drilling average gas flow after fracture underground achieved 0.2 m³/min, concentration more than 50％, which ensured the gas control effect of deep mining.