The invention discloses a ship emergency airbag. The airbag comprises a hull, a plurality of fixing columns are fixedly connected on side wall of one side of the hull, rigid air pipes are fixedly connected to the ends, away from the hull, of the fixing columns, carrying rods are symmetrically arranged on the lower ends of the rigid air pipes, one ends of the carrying rods are fixedly connected tothe side wall of the hull, first air inlet tubes are arranged on the upper ends of the rigid air pipes, the first air inlet tubes are communicated with the rigid air pipe, an air pump is fixedly connected to the hull, the ends, away from the rigid air pipes, of the first air inlet tubes fixedly connected to an air outlet of the air pump, and second air inlet tubes are arranged on the upper ends ofthe rigid air pipes. The airbag is simple in structure, convenient to operate, and capable of quickly inflating when a ship encounters an accident, preventing the hull from sinking, and helping the ship float on a water surface safely, thereby greatly ensuring the life safety of people on the ship, and many lives are saved to a certain extent.