The utility model provides a novel anus dilator seat, which comprises a hollowed body and a stitching connection part arranged at the rear end of the hollowed body. The stitching connection part is a broadside with a hollowed structure and the diameter of the stitching connection part is larger than the diameter of the hollowed body. The hollowed body can be fixed on the surgical operation position through stitching the broadside on the tissue. At least one opening is arranged on the wall of the hollowed body. The mucous membrane of upper hemorrhoid and all or partial hemorrhoid tissues can enter the internal part of the hollowed body. The utility model mainly has the advantages that the mucous membrane of the upper hemorrhoid and all or partial hemorrhoid tissues can be pulled into the anus dilator seat from the opening during operation, stapling nails exist only at the mucous membrane of the upper hemorrhoid and at the all or partial hemorrhoid tissues after a hemorrhoid stapler is used to stitch and cut the hemorrhoid, the anorectum is still provided with a certain elasticity and the smooth defecation of the patients is ensured.