Integrally lifting type maintenance dock

The invention relates to an integrally lifting type maintenance dock. The integrally lifting type maintenance dock is provided with a closed type water drainage lifting bin body; water pumps for waterinlet or water drainage are arranged on the two sides of the bottom of the water drainage lifting bin body; dock walls are arranged in the symmetric positions on the two sides of the water drainage lifting bin body; the dock walls are higher than the top surface height of the water drainage lifting bin body; maintenance operation platforms are arranged on the dock walls on the two sides; a plurality of transversely placed hull storage racks are also arranged on the top platform of the water drainage lifting bin body; and a plurality of hull anti-skid convex ribs are also arranged on each hullstorage rack. According to the integrally lifting type maintenance dock, the supporting of the dock to a ship is completely carried out by means of buoyancy and water drainage without mounting a large-sized gantry crane to ho