Abstract: The sliding directional drilling technology is an excellent technology of drilling construction for coal seam gas drainage. With the deepening of its popularization and application, the problems of poor safety and difficult in deep drilling have exposed. Through the introduction and analysis of the principle and feature of compound drilling technology, the method is proposed that the combination of the compound drilling technology and the sliding directional drilling technology to solve these problems. The practice shows that the compound drilling technology has a positive significance for improving the comprehensive drilling efficiency, the drilling capacity of existing system and the borehole environment, as well as controlling the drilling trace precisely. It is a new directional drilling technology in underground coal mine, and has the characteristics of safe, high efficient and deep borehole. Finally, according to the problems of sliding directional drilling technology applied in the gas and water disaster control of roof and floor in coal seam, some suggestions are proposed about the compound drilling technology of the directional drilling in roof and floor rock.