Abstract: According to the special gas abnormal conditions occurred when north inclined air returning shaft of Mayixi No. 1 Mine passing through No.19 seam,in 0 rder to prevent coal and gas outburst,gas drainage with the cross boreholes in drilling field,coal mass surrounded the mine shaft at the seam opening location reinforce d with grouting,the seam roof controlled and reinforced with the metal framework when the construction operation passing through the coal crosscut and the comprehen sive outburst prevention technology with a small cross vibration blasting were applied to realize the safety seam opening. The gas pressure at the seam opening locatio n was reduced from 1. 52 MPa to0. 38 MPa,the gas content was reduced from 14. 3 m3/ t to 4.8 m3/ t,and both were not over the national and the mine critical value. T he outburst danger in the seam opening process was effectively eliminated,the seam opening period was reduced and the mine safety and high efficient production was ensured.