Abstract: In order to control the concomitant disaster of gas and coal spontaneous combustion in fully mechanized caving face of inflammable thick seam effective ly, based on the analysis of forming reason of gas content uneven area, comprehensive gas drainage technology was put forward, which included high drainage of stag gered drilling field, special gas drainage roadway and gas drainage of adjacent goaf. According to the risk of spontaneous combustion of the working face under the con dition of gas drainage, measures including preventive nitrogen injection, three phase foam fire extinguishing technology, plugging-wind technology and forecast technol ogy of spontaneous combustion were adopted.The problems of gas and coal spontaneous combustion in No.3-209 working face of Fucun Coal Mine colliery during mini ng period were solved effectively and safe mining of the face was ensured.