Offshore dredging reef-exploding ship

The utility model relates to the field of dredging equipment, and particularly discloses an offshore dredging reef-exploding ship which comprises a ship body, a down-the-hole drill with a fixing frame and a drilling frame, a first section, a second section, a gyrator, a hydraulic chuck, a suspension arm, anchoring equipment with an anchor head and an anchor gear, an air compressor, a hydraulic station, a blasting processing room, a supporting push rod and an inclined supporting rod, a frame body connecting rod and a satellite positioning system. The drill stand of the down-the-hole drill is divided into the first section and the second section which can rotate relative to each other, so that the drill stand of the down-the-hole drill can be folded in time when the down-the-hole drill encounters stormy weather or stops working, the drill stand is prevented from being broken due to overlarge stress, and the drill stand is convenient to mount and dismount; anchor gears of the anchoring equipment respectively cor