Canker sores can be treated with topical medication, oral medication and surgery. 1. Topical medication: If a hole is formed after a carbuncle boil has pushed out pus, it is recommended to apply antibiotic medication, such as mupirocin or erythromycin ointment, as prescribed by the doctor. 2. Oral medication: Patients can take oral antibiotics as prescribed by the doctor to reduce inflammation and relieve the symptoms of the boil, such as amoxicillin or cefuroxime. 3. Surgical treatment: If a hole is formed after the pus comes out of the carbuncle, and if obvious pus can be seen, it is considered to be a purulent change, and surgical crucifixion can be used to drain the pus according to the doctor’s instruction. If a hole is formed after pus emerges from the carbuncle, the patient should consult a doctor in time and follow the doctor’s instruction to do the corresponding treatment, and pay attention to the hygiene and cleanliness of the affected area at the same time.