The utility model belongs to the technical field of the heating device. The utility model aims to save the energy, extends the service life and has one stove with multifunction. A stove mouth (4) is made into a water jacket shape, and is communicated with a circulating water jacket (5). The included angle part of the inside of the circulating water jacket (5) and the inside of the water jacket type stove mouth (4) is welded with 8 to 12 triangular strengthening heating pieces (13). A movable fire grate (9) and a stove shell (8) are fixed on the lower part of the circulating water jacket (5). A water magnetizer (16) is arranged on a water return pipe (14), and is connected with the stove shell (8). The utility model causes the heating utilization to be perfect, convenient and practical. The utility model utilizes the heat energy of the smoke gas, and especially utilizes the radiation energy below the stove mouth and above stove hearth. The heat exchange efficiency improves 20%.