The degree of damage is related to the nature, dose, concentration, time and area of damage, and whether the treatment is timely and effective. Chemical damage to local tissues include oxidation, reduction, corrosion, protoplasmic toxicity, dehydration and scarring, which are related to the chemical substances, which can be absorbed from normal skin, wounds, respiratory tract, digestive tract, etc., causing systemic damage such as poisoning and destruction of internal organs. Classification of chemical burns: acid burns, alkali burns, phosphorus burns combined with poisoning, cyanide and combined poisoning, asphalt burns, etc. There are many chemicals for chemical burns. Such as: sulfuric acid, hydrochloric acid, hydrofluoric acid, petrolatum, oxalic acid, etc. Sulfuric acid, hydrochloric acid, nitric acid burns, due to scab cover, early judgment of the depth is more difficult than the general burn, can not be judged as concentration burns due to the absence of blisters, hydrofluoric acid burns, the trauma surface may initially only erythema or leather-like crust, followed by necrosis. It is more severe damage, and litharge burns mainly produce damage to the kidneys. Alkali burns are commonly associated with isotonic alkali, lime and ammonia, etc. Alkali burns are characterized by binding to tissue proteins, forming alkaline protein compounds that dissolve easily and further deepen the trauma. Treatment of acid and alkali burns immediately remove the infiltrated clothing, continuous flushing of the trauma with a large amount of water, preferably for more than 30 minutes, such as lime burns, should first brush clean lime powder, and then flush with water, acid burns can be cleaned with 2% to 5% bicarbonate of soda solution, alkali burns can be flushed with 0.5% to 5% weak acid solution. Chemical burns after healing chemical burns treatment should be timely, accurate judgment of the type of chemical burns, determine the treatment plan, reduce the further damage of chemicals, is the whole body factors of chemical burns healing situation, timely and accurate trauma treatment, reduce the incidence of scarring and the physiological and psychological harm.