The invention discloses a ship unloader and belongs to the ship manufacturing technical field. The ship unloader comprises a base and a column which is fixed on the base; the column is hinged to an extensible suspension arm through an inner arm, wherein the folding of the inner arm is controlled by a third oil cylinder and the extensible suspension arm is controlled by a first oil cylinder; the inner arm and the extensible suspension arm sleeve a conveying pipe; one end of the conveying pipe is provided with a suction nozzle; the other end of the conveying pipe is communicated with an inlet of a storage tank through a joint and a pump; the inner arm is provided with a second oil cylinder which is used for folding the extensible suspension arm; two ends of the second oil cylinder are hinged to two ends of the inner arm respectively; the bottom end of the column is connected with the base through a slewing bearing. According to the ship unloader, the problems that changes cannot be performed along with the distance between the site and a cargo ship, the use is inconvenient, the working efficiency is affected, the folding cannot be achieved, the occupied space is lager, and the protection is difficult in the existing ship unloader can be solved.