According to relevant information, Europe and the United States generally pay more attention to the prevention of burns. The Netherlands and other countries have a “prevention department” in the burn unit, and doctors are tasked with promoting burn prevention knowledge, so the public’s knowledge of burns is generally high. In developed European countries, the awareness rate of knowing that the emergency way after a burn injury is to pour cold water is more than 95%, while the ratio in China is only about 33%. We should strengthen the knowledge in this area. Cold therapy is one of the first aid measures for small area burns, especially limbs, and is very widely used clinically, but unfortunately, due to the lack of first aid knowledge, many injured patients do not do this, but use many so-called secret recipes, including many non-specialist doctors, such as toothpaste for external use, kimchi water rinse, lettuce oil for external use, soy sauce for external use, soy sauce for external use, even white sugar for external use, cat ashes for external use, child urine, fetal rat oil, etc., also known as the many ancestral secret recipes. Cold therapy, is the use of cold water on the wound surface after the drenching, soaking or wet compress, quickly take away the residual temperature to reduce pain, tissue heat continued damage and reduce exudation and edema. Note: 1, the best immediately after the injury; 2, the water temperature of 5-20 ℃ is appropriate, to the patient feel comfortable; 3, the duration is generally 30-60 minutes, preferably to remove the water source without pain; 4, cold therapy is limited to small and medium-sized area, not suitable for large areas, in short, not suitable for patients who need immediate resuscitation.