Analysis of the condition: burns are divided into three degrees: first-degree burns are only burning or scalding of epidermis, generally only burning or scalding local redness, swelling, heat and pain, and most of them have no clinical manifestations such as blisters. First-aid treatment: cold compress to cool down and apply moist scald cream. After healing: leaving no scar is basically the same as the original skin. Second-degree burns are only burns on epidermis and dermis. Generally, burns and scalds are reddish, swollen, hot and painful, and are often accompanied by blisters. First-aid treatment: cooling can relieve pain, and be careful not to burst the blisters (to prevent infection). If the blisters are large, pump out the water with a disposable syringe, apply sulfadiazine zinc ointment to prevent bacteria and inflammation, and take antibiotics appropriately. After healing: if there is no infection and no scar, the injured part will have a slight black and red color. Third-degree burn is only the burning or scalding of epidermis, dermis and subcutaneous tissue, which is generally a local red, hot and painful skin ulceration with a large amount of exudate. First-aid treatment: focus on preventing infection, rehydrating in a large area, preventing shock (a large amount of exudate dehydrates the body) or giving life-threatening advice on skin grafting to go to the hospital in time. Newborns have good skin vitality and no scars. Pay attention to prevent infection. If infected, there may be scars.