First of all, what is perianal abscess? The full name of perianal abscess is perianal rectal space abscess, which is an acute purulent disease caused by infection in the perianal rectal space. When the abscess breaks down, it will form an anal fistula. It is called canker sore in Chinese medicine. It is a common and frequent disease in anorectal medicine because of its rapid onset and pain. Second, the culprit in 95% of perianal abscesses is surprisingly an anal gland infection. In other words, most abscesses are caused by anal gland infections. In a very small number of patients, the cause is anal fissure, foreign body, or trauma. Third, what is the anal gland? How can they cause abscesses? Anal gland is a normal tissue of human body. The anal glands are located at the bottom of the anal fossa at the dentate line, with the opening upward (a congenital defect of the human body). Under normal circumstances, the anal fossa has a self-cleaning function, which can squeeze out the fecal residue, when tired, stay up late, the body’s immunity decreases, or diarrhea, dry stools, or drinking alcohol, eating spicy, self-cleaning function decreases, fecal residue will cause the anal gland to feel beam, inflammation will be along the glandular canal, spread to the rectal space of the anal canal, forming abscesses. Fourth, preventive care. 1, keep the stool normal, try to avoid diarrhea, dry stool, keep the anal part clean and hygienic. 2.Actively treat anal diseases, such as anal cryptitis, anal papillomegaly, hemorrhoid seeking. 3, the disease should be treated as soon as possible to prevent the spread of inflammation.