Butt boils for half a month, it is recommended that you can use topical antibiotic ointment to treat, the formation of abscess can be abscess incision. 1. Topical antibiotic ointment: boils on the buttocks are usually caused by the infection of Staphylococcus aureus bacteria in the skin, which can be treated with topical antibiotic ointment such as erythromycin ointment and mupirocin ointment under the guidance of the doctor, and most of the boils can be matured and gradually recovered from the ulceration after regular use of the medication. 2. Abscess incision: If the boil is still not improved in half a month or so, and the local abscess is formed as cellulitis, it is recommended to incise the wound and drain it at the same time, and change the medicine regularly. Oral antibiotics such as amoxicillin and cefaclor should be taken under doctor’s supervision. If the boil does not improve in half a month, it is recommended to consult the general surgery department of the regular hospital for treatment.