When taking a shower, people tend to turn up the water temperature. Sometimes the temperature of the water is not tested before bathing, and a sudden spurt of hot water can cause scald injuries to the person taking the bath. Especially when parents give children a bath, if you pour hot water into the tub first, and then go to get cold water to add, when the mother turns to get cold water, the children see water in the tub, they may reach into the hand to play with the water or jump into the tub, which results in burns. Therefore, before giving a child a bath, you must first put cold water, and then hot water, so as to avoid pediatric scald.