NOVELTY - A stalk gasification boiler comprises a charging cover (2), an upper furnace (3), a flue pipe (4), a flue valve (5), a flue connection pipe (7), a lower furnace (8), an upper connection pipe (10), an internal bladder (11) of furnace, a lower connection pipe (12), an air supply pipe (14), a plug board (15), a dust chamber door (16), a dust chamber (17), a furnace base (18), a central air supply pipe (19) and a heat absorbing pipe (9).    USE - The stalk gasification boiler is useful for commercial and industrial applications.    ADVANTAGE - The stalk gasification boiler with simple structure can satisfy both the need of the rooms in the north area in cold winter and the need of the rooms (workshops, factories and offices) of 50-500 m2; and can provide heat and gas at the same time.    DETAILED DESCRIPTION - A stalk gasification boiler comprises a charging cover (2), an upper furnace (3), a flue pipe (4), a flue valve (5), a flue connection pipe (7), a lower furnace (8), an upper connection pipe (10), an internal bladder (11) of furnace, a lower connection pipe (12), an air supply pipe (14), a plug board (15), a dust chamber door (16), a dust chamber (17), a furnace base (18), a central air supply pipe (19) and a heat absorbing pipe (9), where the lower end of the upper furnace is connected with the upper end of the lower furnace; the cavity of the upper furnace and that of the lower furnace form a furnace cavity (21); the lower end of the lower furnace is connected with the upper end of the furnace base; the lower end the base is connected with the dust chamber; a plug board is set between the dust chamber and the furnace base; the open end of the dust chamber is set with the dust chamber door; the middle part in the furnace base is set with a central air supply pipe connected with one end of the air supply pipe (14); the other end of the air supply pipe is set outside of the furnace base (18); the charging cover is set at one side of the upper furnace; the flue pipe is set at the other side of the upper furnace; the flue pipe is connected with a flue valve; the furnace internal bladder is set at lower part in the lower furnace and fixedly connected with the inside wall of the lower furnace; a water jacket (20) is formed between the furnace internal bladder and the inside wall of the lower furnace; the open end of the heat absorbing pipe is fixed on the wall at one side of the cavity of the furnace internal bladder; the heat absorbing pipe is connected with the water jacket; the upper furnace is fixed with a flue connection pipe; the lower furnace corresponding to the water jacket is fixed with an upper connection pipe and a lower connection pipe, respectively.    DESCRIPTION OF DRAWING(S) - The drawing shows a front view of the stalk gasification boiler.    Charging cover (2)    Upper furnace (3)    Flue pipe (4)    Flue valve (5)    Flue connection pipe (7)