A boil is a purulent hair follicle and deep tissue infection around the hair follicle, and the fusion of multiple adjacent hair follicles infected with inflammation is called a carbuncle. Staphylococcus aureus is the most common causative organism. The treatment of boils is mainly localized. For early inflammatory nodules that do not break down, physical therapy such as hot compresses, ultrashort wave irradiation, or topical application of tincture of iodine, ichthyolite ointment or golden pills can be used. For patients with obvious systemic symptoms, facial boils or complications of acute lymphangitis and lymphadenitis, antibiotic treatment should be given intravenously, and phenol, which is also known as carbolic acid, can be dabbed on the top of it when pus head appears. When there is a fluctuating sensation, the pus should be excised and drained in time. For immature boils, do not squeeze them so as not to cause the spread of infection. Treatment of carbuncles should be systemic, with the patient resting properly to enhance nutrition, using analgesics if necessary, and antibacterial drugs such as penicillin and erythromycin can be used, and subsequently antibiotics can also be adjusted according to drug sensitivity tests. If you have diabetes, you should control your diet according to your condition while Antibiotic treatment is given. Local treatment, early on, can also use 50% magnesium sulfate or 75% alcohol wet compress, also can use 0.5% complex iodine wet compress, to promote the inflammation of subside, reduce pain. If there is already a ruptured patient, the spread of infection in the subcutaneous tissue is greater than the skin lesion. The drainage is also not open and requires prompt incision and drainage. However, incision should not be used for canker sores on the lip. The timing of surgery is appropriate when the central area of the canker is subcutaneously necrotic and softened, not too early or too late. Extensive incision and drainage is done under intravenous anesthesia to remove pus and necrotic tissue. The skin pieces around the incision are preserved as much as possible, usually with a cruciform or double cruciform incision, or sometimes with a Kawasaki incision, taking care that the length of the incision should not exceed the normal skin but reach the deep fascia, removing all necrotic tissue as much as possible and filling it with gauze or iodoform gauze.