Immediately rinse with cold water for about 15 minutes to prevent skin from being damaged by excessive temperature, and then apply burn ointment. If not, you can use toothpaste instead. If it is a mild burn with a small area, only local blistering, erythema, fever and swelling, the following methods can be used: 1. Soaking the injured part with kerosene or alkaline water can relieve pain, reduce swelling and prevent foaming in a few minutes. Subsequently, you can apply some sesame oil, vaseline and other oils to the affected area. Second, soaking the injured part with salt water can also relieve pain and reduce swelling. Third, use raw eggs in honey, or mix them and apply them to the wound. Fourth, the red and swollen parts are coated with ancient prescription powder, which can promote heat dissipation and shrink blood vessels, and play a role in reducing swelling. 5. Soy sauce or soap can be applied to red places. Soy sauce can relieve pain, but it can't effectively prevent foam soap from playing a role in cleaning and sliding. 6. If the burn is not rotten, you can apply a piece of tofu and white sugar to the affected area after stirring once or twice, which can immediately relieve the pain and then change the tofu for three or four times. If it is burnt, you can roll a penny of rhubarb powder, mix tofu and sugar. This prescription is very effective in treating burns when applied to the affected area, and it is widely circulated among the people.