The utility model discloses a radiation hole direction drilling rig, including guide instrument, directional drill and double -deck drilling rod, the last pair gyration unit heads that are equipped with of directional drill, double -deck drilling rod includes the inner drill stem of outer outside drill pipe and inlayer, outside drill pipe and inner drill stem correspond two power take off articulates of two gyration unit heads respectively, still include double -barrelled direction festival and starter, the double -barrelled direction festival is including outer tube and inner tube, outer tube one end is connected with outside drill pipe, inner tube one end is connected with inner drill stem, it has the probe storehouse to open on the outer tube, be provided with the probe with the guide instrument intercommunication in the probe storehouse, the inner tube other end is connected with the starter. The outside drill pipe deflecting in the two -layer drilling rod is passed through to the drilling technology that applied this equipment goes on when creeping into, inner drill stem creeps into, and drilling accuracy is high. Double -deck drilling rod reverse circulation drilling makes to be full of area pressure drilling fluid between outside drill pipe and the pore wall, can effectively maintain the stability of the sandy gravel wall of a well.