The utility model discloses a rail bonding drill relates to machinery, and it includes that one end is provided with fastening device, and the other end is provided with the slide rail of box and lower box, upward be equipped with main motor and advancing mechanism in the box, the nowel is internal installs the pivot, installs driven sprocket in the pivot and the drill bit connector that is used for fixed drill bit, main motor drive drill bit connector is rotatory, advancing mechanism includes the lead screw by speed governing motor drive, installs the fast switch support on the lead screw, and stroke regulator links, installs on the fast switch support to the slide rail through fast switch support and lead screw, go up the box and follow slide rail synchronous motion with lower box by theadvancing mechanism drive, rail fastening device is the chuck including chuck before the rail that is used for the clamping buckle rail with after buckleing the rail. The utility model discloses it is great with the noise to solve present rail bonding drill volume, be not convenient for to hole between the narrow and small very much rail in space the operation with be not convenient for drillingoperation and the big problem of noise in the location and the interval of unpowered electricity.