The utility model relates to a multifunctional energy-saving stove. Upper and lower parts of an outer shell of a stove body are both provided with stove rings. The bottom part of the stove body is provided with an air vent and a slag hole. The right side of the stove body is provided with a water inlet pipe and hot water pipe which are both provided with valves for controlling water quantity. The inner layer surface of the stove body is provided with radiation fins. A cavity forms between an inner layer and a hearth, and can contain wind or water. A hearth bone is filled in honeycomb briquettes, or coal blocks, or briquettes. The left side of the stove body is provided with a blower fan which leads the wind into the cavity by an air pipe. The lower part of the stove body is provided with a blow-off pipeline and a valve. The structure can supply hot wind, hot water, and steam, and has low cost.