Based on special gas occurrence manner of coal seam roof limestone, comprehensive gas treatment of split source, draining while mining and strengthening corner drainage and ventililation was adopted in Shanxi Yitang Coal Industry Corporation. Through gas drainage in 200m ahead of working face, gas pressure under face roof was controlled in safety value, which solved potential safety hazard caused by transfinite gas in stope face and provided guidance and reference to coal mine gas occurence in similar geological conditions.