The temperature of boiling water and the injured person are uncertain, and whether scalding water will leave scars cannot be generalized. Generally speaking, the contact time of boiling water is short, and the heat source moves away instantly. The injured people are relatively healthy adults, and more than 90% of those who seek beauty after formal and proper treatment will not have scars. If the beauty lover is young, exposed to high temperature for a long time, seriously infected and not handled properly, more than 50% patients may have scars. Wounds healed within 14 days belong to shallow second-degree burns, and those healed over 2 1 day basically belong to deep second-degree or third-degree burns.