U type fully mechanized working face of 11-001 fully mechanized working face in Sanjiaohe Mine was taken as example, the gas parameters of current coal seam was analyzed to judge the reasonability of coal seam drainage, high - position gas drilling and different step of buried pipe technology was adopted to analyze the gas content in upper corner and drainage pipeline, the reasonable parameters of gas drainage and buried step were got, providing reference for gas control in No. 11 coal seam of Sanjiaohe Mine.