Anal burning is common in the following situations: First, the anus is a part of the body that can detect body temperature, often used in children to detect body temperature, and its normal value is between 36.2-37.2 ℃. If the temperature is higher than this value to prove that the fever, usually the temperature of other locations of the body will also rise, and accompanied by cough and other symptoms. Second, consider having anal diseases, a common disease is perianal abscess, mainly due to external infection resulting in subcutaneous pus cavity, the patient’s main manifestations of redness, swelling, heat, pain, mild perianal abscess patients are only localized redness, swelling, heat, pain, severe systemic fever, perianal abscess with local fluctuation, need to be cut open as soon as possible to drain the pus. Third, consider perianal local dermatosis, mainly due to anal skin ulceration, infection or sensitivity.