The deck mounted azimuth thruster is composed of azimuht thruster, diesel engine, motor and other driving sources. It has the advantages of compact structure, high mobility and easy installation. The whole unit can be installed directly on the deck, and it can be equipped with lifting and swinging functions for optional. The vertical height can be adjusted by the mechanical or hydraulic device, so that the ship can adapt to the bigger change in draft depth. The propeller diameter can be further reduced to adapt to the complex water area, the ballast water treatment system can be optimized, and the ship economy can be improved.