Perianal abscess fever can be physically cooled down, use antipyretic drugs under the guidance of the doctor, incision and drainage of abscess, application of antibiotic treatment. 1. Physical hypothermia: when the temperature rises in the early stage, physical hypothermia can be used, such as ice compresses, warm water baths and so on. 2. Application of antipyretic drugs: If the effect of physical cooling is poor and the patient continues to have a high fever, antipyretic drugs can be used under the guidance of the doctor, commonly used are ibuprofen, acetaminophen tablets and so on. 3. Incision and drainage of abscess: Fever in perianal abscess is mostly caused by pus that can not be discharged in time, so the doctor can perform incision and drainage of abscess and change the medication in the abscess at regular intervals. 4. Application of antibiotics: fever is mostly caused by infection, in the incision and drainage at the same time, also need to apply sensitive antibiotics, such as penicillin, cephradine and other anti-infective treatment, to avoid aggravation of infection. When found perianal abscess, it is recommended that patients go to the anorectal department as soon as possible to avoid delay in treatment.