Cabin arrangement method of small multipurpose hydrogen power ship

The invention provides a cabin arrangement method of a small multipurpose hydrogen power ship. A hydrogen fuel cell, an auxiliary system and a water collecting tank are arranged in a cabin, the auxiliary system is arranged close to a bow, and the hydrogen fuel cell is arranged close to a hydrogen cylinder at a stern; the auxiliary system is a heat exchange device, a refrigerant inlet and a refrigerant outlet of the auxiliary system are respectively communicated with seawater, and a heating medium inlet and a heating medium outlet are respectively communicated with a cooling liquid outlet and a cooling liquid inlet of the hydrogen fuel cell; the hydrogen fuel cell is provided with a hydrogen inlet, an air inlet, an exhaust port and a water outlet; a hydrogen inlet of the hydrogen fuel cell is communicated with a hydrogen cylinder through a hydrogen pipe, a water outlet of the hydrogen fuel cell is communicated with a water collecting tank, and the water collecting tank is communicated with a generated water dr