Hull of pile driving barge

The invention discloses a hull of a pile driving barge. The hull comprises a base and a deck, wherein the base comprises a plurality of hollow cavities, the base is connected to the deck through support pillars, the base is provided with a pressure unloading and loading device for water, and the pressure unloading and loading deice is used for pumping or filling water from the hollow cavities, so that floating and subsidence of the hull can be controlled. Through a floor type manner, the hull is fixed on a seabed; through design of the support pillars, the influence of offshore sea waves on stability of the hull can be reduced; through the annular hull, stability of the hull can be increased, the weight of the hull is reduced, and high-efficiency floating and subsidence can be implemented.