Burns or scalds often occur in everyday life, and people often panic, scream, run to the hospital in a panic or rush to apply soy sauce, alkali or salt to the trauma. In fact, these practices often affect the best treatment of trauma, and sometimes even aggravate the condition. Because the heat has burned the skin after the burn, and the heat that invades the body will continue to penetrate deeper, causing delayed damage to deeper tissues. So, how to use the on-site facilities where the burn or scald occurs to provide scientific and reasonable early treatment of the trauma to reduce the damage caused by the burn? Cold therapy: Cold therapy is to place the injured limb under running tap water for rinsing or in a large basin for soaking after a burn injury, or if there is no tap water, the limb can be immersed in well water or river water. Cold therapy can reduce the local temperature, reduce trauma pain, stop the continued damage of heat and reduce exudation and edema. The duration of cold therapy is mostly based on the fact that the trauma no longer has severe pain after the cessation of cold therapy, which is about 0.5 to 1 hour. The water temperature is generally 15-20℃, and those who have the conditions can put some ice in the water to lower the water temperature. Timely cold therapy can neutralize the residual heat that invades the body, prevent the continued penetration of heat, prevent the trauma from continuing to deepen, and reduce the depth of tissue burns. Cold therapy can also reduce edema, burn skin capillaries expand sharply, capillary permeability increases, a large number of plasma-like substances seeping out of the blood vessels to form edema or blisters, cold therapy can make the capillaries expand due to high temperatures contract sharply, reduce the seepage of plasma-like substances, reduce edema. Therefore, the earlier the cold therapy after the burn, the better. Do not worry about the bacteria in the water and the infection of the burn wound when it comes in contact with raw water. Early cold therapy treatment of the trauma should be carried out without hesitation to minimize the damage. Going to the hospital immediately, although the best treatment is available, can sometimes miss the golden time for trauma treatment and cause irreversible damage to the deeper part of the trauma. Acid-base burns can cause severe deep burns. Although acid and alkali can be neutralized, the neutralization reaction can generate heat, which in turn can deepen the trauma. In the case of chemical burns on the head and face, attention should first be paid to the eye to see if there is any damage to the cornea and to immediately flush the trauma with plenty of water. Treatment of trauma: Cold therapy has a certain mechanical cleaning effect on the trauma, the trauma is more clean, do not break the blisters, and do not tear off the herpes to reduce the chance of contamination of the trauma. Do not apply colored drugs or dressings covered with grease to avoid affecting the estimation and treatment of the trauma depth. Wrap the wound with a clean, clean sheet or dressing to protect it, and then send the casualty to the nearest hospital for further treatment. Once the skin has been burned, the damage will be irreversible. The formation of scars after deep burns is inevitable, and scar contracture deformity will directly affect the work, study and life of the injured person. However, simple treatment of the wound in the short golden time after the burn will greatly reduce the degree of damage and the formation of scars, and the prognosis of the injured person will be greatly improved.