Abstract: Zhaoguan mine is a high gas mine, the main coal seam is 7 coal seam, the gas distribution is“The East High West Low, the deep high shallow low” the overall law, at present, 6712 face is the last coal mining face in 67 mining area. The gas content of the whole mining area is low, and the gas content is about 0-3 m³/t. the buried depth of the face is −549 m, which is relatively deep, the highest gas content is over 6 m³/t, which belongs to the gas abnormal area, which verifies that there is an unbalanced gas distribution law in the same mining area, the factors of gas emission in the face mainly come from the coal seam, the adjacent seam and the adjacent 6708 goaf, the“Six-in-one” gas comprehensive prevention and control technology of“Pre-drainage of coal seam borehole, drainage of goaf area by high and low position borehole, “Cavity Type” sealing and drainage of corner, advanced drainage of adjacent goaf, leakage stoppage of air bag wall at corner of air inlet and gas drainage control of air inlet” has been determined, the difficult problem of gas control in the corner corner of air return of coal face is effectively treated, the gas“Zero exceeding limit” is realized, and the safe and efficient mining of high gas and thin coal seam is guaranteed