Carbuncle (is a kind of poisonous sore, acute suppurative disease occurring on the body surface, limbs and internal organs) Swelling and poison is the term used in Chinese medicine about skin sores, which is equivalent to suppurative inflammation caused by bacterial infection in Western medicine. Canker sores are characterized by redness, swelling and tallness, tightly bound root discs, heat and pain, with the characteristics that unpus can be easily eliminated, pus can be easily ulcerated, and sores can be easily converged. Gangrene is divided into two kinds: head gangrene and headless gangrene. Headed gangrene means that at the beginning there is a localized corn-like pus head, accompanied by redness, swelling, heat and pain, and it is easy to spread to the deep part and the surrounding area, and the pus head will increase. The headless gangrene is diffuse swelling without head, the skin color is unchanged, no heat and little pain. If the patient has carbuncle, it should pay attention to it, and should not be treated by oneself, but should go to the regular hospital to be treated under the guidance of physician.