Acid burn (acidburn) is a burn damage caused by a high concentration of strong acid acting locally on tissues in the body, causing tissue dehydration and protein denaturation. Acid burns are characterized by dehydration of cells and coagulation of proteins caused by the contact of acidic chemicals with the skin, and are accompanied by thermal burns. First aid treatment: 1, should be immediately rinsed with a large amount of water, not less than 20min, and then available 3% ~ 5% sodium bicarbonate solution wash and neutralization. No conditions can also be used soap washing and neutralization. 2, trauma with exposure therapy: Ⅲ degree burns are appropriate to perform early scab excision, autologous skin removal and skin grafting, in order to destroy the trauma early. 3.Large acid burns should be treated with anti-shock therapy. 4, early administration of procaine penicillin 1.6 million u / d intramuscularly to fight infection, with 3 ~ 5 d after the decision to stop or switch to sensitive antibiotics according to the trauma and the patient’s systemic condition. Prevention: 1, in the work should work in strict accordance with the operating procedures, in addition, it is necessary to pay attention to the need to wear a good mask and gloves, as well as wear protective clothing, which can reduce the chance of injury. 2, the degree of damage from acid burns is related to the nature of the acid contact, concentration, time and whether the first aid is appropriate and other factors. If you know first aid, you can avoid some tragedies. 3, acid burns immediately after flushing with water is the most important and effective first aid measures. At the scene of the injury, quickly remove the acid-stained clothing, and use a lot of flowing water (tap water, well water, river water, etc.) to dilute the chemical substance and flush it out with the mechanical force of the rinse.