A perianal abscess is also called a perianal abscess. Perianal abscess is short for perianal abscess, which is an acute purulent infection of the soft tissues around the anorectum. Anatomically, the perianal space around the anorectum is filled with loose fatty tissues, which are highly susceptible to suppuration and formation of perianal abscesses after infection, and also susceptible to spread to other surrounding spaces to become multi-gap perianal abscesses. Generally speaking, the initial perianal abscess is not easy to attract the attention of patients, and when the symptoms appear, the pain is unbearable and the patient is restless, there is basically no possibility of self-healing or medication cure at this time. Only surgery can cure it completely, and it should be done as soon as possible for five reasons: 1. to prevent the infection from spreading to the whole body and to avoid life-threatening sepsis and septicemia. 2. To prevent the infection from spreading to other interstitial spaces to prevent horseshoe-shaped abscesses that may lead to increased difficulty in surgery. 3.Prevent the formation of anal fistula after the abscess breaks down. 4.Early relief of pain and relief of suffering. 5.Prevent the anal sphincter from being damaged and affecting the sphincter function of the anus.