Abstract: A multifunctional water boiling and steaming device wherein the steam produced when boiling the water in a heating room is guided by a resisting tube into a steaming chamber to heat the food contained therein and wherein the boiled water flows through a cooling tube and is cooled therein into warm water, the cooling tube being disposed in the steaming chamber to conduct the heat to the steaming chamber to warm the same, whereby the heat of the steam and the boiled water can be recovered and utilized.