Sand suction ship and sand suction head

The invention provides a sand suction ship and a sand suction head. According to the sand suction ship, a sand suction pump is arranged on a ship body, and the ship body is further connected with the sand suction head through a connecting rod; the sand suction head comprises a sand suction cover; the sand suction cover is hinged to the connecting rod; a sand crushing roller which is horizontally arranged and rotates is arranged in the sand suction cover; the sand suction cover is communicated with the sand suction pump through a sand suction pipe; and the sand suction cover comprises four side walls and a top wall, and the bottom of the sand suction cover is open. In the sand crushing roller, a plurality of cutter bars are arranged on a roller body, blades are arranged at the ends of the cutter bars, and roller shafts are arranged at the two ends of the roller body. By means of the improved sand suction head structure and the adopted sand crushing roller structure, damage to a riverbed can be avoided, and the