Scald grading is based on the different depths of thermal damage to the skin, which is divided into one degree, superficial second degree, deep second degree and third degree. 1. one degree: one degree of scalding injury to the superficial epidermis, hair layer healthy, 3-7 days flaking healing. 2. shallow second degree: superficial second degree burns damage to the epidermis and dermis shallow, part of the hair layer healthy, can be self-recovery. 3. deep second degree: deep second degree scald injury to the deep dermis, skin appendages damaged, can not regenerate and repair. 4. Third degree: third degree burns injure the whole layer of the skin, skin pain disappears, the skin is leathery, wax white, burnt yellow or carbonized. Due to the different conditions of patients, the specific medication and treatment methods must follow the guidance of the doctor. Do not apply purple potion, soy sauce, toothpaste, etc. to the injured area after the injury.