The invention provides a mine coil sampling repairing device. The device comprises a main frame, brackets are symmetrically and fixedly welded at two ends of an external lower surface of the main frame; a mounting rod is fixedly welded at a lower end of each bracket; a rotating tube is rotatably arranged in a lower end of a first drill stem in a tubular type, second sampling slots are formed at afront sidewall and a back sidewall of the lower end, and first sampling slots are arranged at a left side and a right side of the lower end; a second drill stem is spirally and fixedly arranged at thelower end of the first drill stem through the thread; the second drill stem is arranged at the middle lower part in the main frame, and a third motor is fixedly arranged at the inner side of a sliding rod; a drill is rotatably connected with the outer surface of the lower end of the second drill stem and arranged above a sampling port; the sampling port is formed at the middle of the lower wall of the main frame. The repairing device disclosed by the invention is strong in flexibility, simple for use, conforming to various use conditions, and high in practicability.