The cause of pain in the whole buttocks half a month after perianal abscess surgery is considered to be infection of the wound, and it is recommended to improve the symptoms and relieve the discomfort through general treatment and medication. If the perianal abscess is not properly cared for, the wound drainage is not smooth, etc. may be infected and cause the pain of the whole buttocks, there will be redness, swelling and hot pain of inflammation. Patients are advised to quit smoking and drinking, eat a light diet, avoid spicy and stimulating foods, have a regular work and rest schedule, avoid stress and anxiety, take a warm water sitz bath, and keep the skin dry and clean. In addition to general treatment, patients can also take antibiotics, such as levofloxacin, roxithromycin, doxycycline and other drugs to control inflammation, and when the pain is severe, you can take acetaminophen to reduce pain. Drugs need to follow the doctor’s instructions to standardize the use of adverse reactions to timely consultation, drug allergy is prohibited.