Yellow pus usually takes about a week to drain after perianal abscess surgery. Perianal abscess, also known as perianal abscess, refers to the acute purulent infection of the soft tissues around the anorectal canal and rectum, the main symptom is persistent pain and swelling around the anus, and there will be abscesses under the skin. Surgery is the more common method of treating perianal abscesses, generally after surgery usually need to drain for about a week, after which the pus will be basically drained, but the specific also depends on the individual situation, some people in the drainage of the tissue may also have oozing, the drainage time needs to be appropriately prolonged. Do perianal abscess surgery must strictly follow the doctor’s instructions to do a good job of care, such as to keep the wound clean and hygienic, to avoid infection, usually also need to eat a light diet, do not eat spicy and stimulating food, and strictly avoid smoking and drinking, so as not to affect the postoperative recovery. It is recommended that patients actively follow the doctor’s instructions to cooperate with the treatment, regular medication changes, regular follow-up.