Sealing guard of ship stern shaft

The utility model discloses a sealing guard of ship tail shafts, which is composed of a still shield arranged on a tail shaft pipe, a moving shield arranged on the hub of a propeller and a combination shield plate connected with a ship body or the tail shaft pipe; the combination shield plate is composed of a main plate, an earring plate arranged at the lower end of the main plate and an abnormity plate which is arranged on the other end of the main plate and is provided with a cutting edge; the moving shield, the still shield and the combination shield plate form a plurality of blocks in a maze type, and the sealing of the tail shaft is reliably protected with high efficiency; the utility model has the advantages of simple structure, low cost and strong universality and can be used for the protection and sealing of various tail shafts of ships.