Patients with perianal abscess should have a high-quality, high-protein diet. Because, the consumption of infection after surgery has a certain consumption of human nutrients, more fresh animal protein, including beef, mutton, fish and seafood, etc., can also be appropriately supplemented with vegetable protein, mainly soybeans, which can be used in soy milk or milk, and should eat more vitamin-rich foods, which can promote the healing of the wound to a certain extent. At the same time, intravenous anti-infection treatment should be actively carried out, with a liquid diet as the mainstay and as little dry stool as possible to avoid contaminating the wound. After each bowel movement, cleaning and sitz baths should be performed in a timely manner, and drug changes should be thorough to avoid leaving residual cavities that could lead to the formation of postoperative anal fistula.