Ordinary hot water kettle will stop heating after the temperature is boiled. After waiting for a period of time, the water temperature inside will gradually cool down, especially in winter. For the health pot, it can not only heat the water inside, but also has the function of heat preservation. When the temperature boils, it begins to keep warm. As long as the temperature drops, it will start heating again and the water temperature will remain at a certain state. Except for chlorine removal, in most cases, water commonly used by people is taken from tap water, and if these tap water is not heated, not only bacteria will exist, but also chlorine will exist, which is harmful to human body. But after the water in the incubator is boiled, chlorine can be taken away when it evaporates.