NOVELTY - A biomass carbon gas cogeneration system comprises platform frame, carbonizing furnace (2) and first spiral cooling conveyor (4). The platform frame is provided with furnace body (3). The furnace body comprises aluminum silicate fiber layer (31) and light refractory brick layer (32). The light fire-resisting brick layer is provided with aluminum silicate fiber layer, and is provided with carbonizing furnace corresponding to furnace chamber. Top of furnace is provided with feed pipe connected with air outlet pipe, feed pipe and the other end with feeding tank, and outlet pipe.    USE - Biomass carbon gas cogeneration system.    ADVANTAGE - The cogeneration system does only have fine technique and improves production efficiency, but also has good pyrolysis effect, and good mass of generated biomass carbon.    DETAILED DESCRIPTION - Biomass carbon gas cogeneration system comprises platform frame, carbonizing furnace (2) and first spiral cooling conveyor (4). The platform frame is provided with furnace body (3). The furnace body comprises aluminum silicate fiber layer (31) and light refractory brick layer (32). The light fire-resisting brick layer is provided with aluminum silicate fiber layer, and is provided with carbonizing furnace corresponding to furnace chamber. Carbonizing furnace comprises furnace top, furnace and furnace bottom. Top of furnace is provided with feed pipe connected with air outlet pipe, feed pipe and the other end with feeding tank, outlet pipe and other end with air storage cabinet. The bottom of electromagnetic oven is provided with carbon discharging pipe. The furnace body near bottom of electromagnetic oven is provided with 3 oblique cutting nozzle. Each oblique cutting nozzle is through air pipe. Gas pipe is connected with corresponding fan and gas storage cabinet. Air pipe is provided with air valve. Gas pipe is provided with a gas valve, where furnace chamber through heat pipe is connected with smoke pipe. Heat pipe is provided with gate valve, flue gas pipe on upper heat pipe are respectively provided with upper flue valve and lower gas valve. The air outlet pipe close to top of furnace is provided with air valve. Diffusing pipe is provided with ignition valve, air outlet pipe on air outlet valve and air storage cabinet of packing. The carbon discharging pipe is provided with nitrogen valve. The furnace body close to the bottom of electromagnetic oven is provided with furnace bottom thermocouple. The furnace body near top of furnace is provided with furnace top thermocouple. The interior of middle part of furnace is provided with furnace thermoelectric couple. An INDEPENDENT CLAIM is included for a using method of the biomass carbon gas cogeneration system which comprises feeding stage, drying stage, pyrolysis stage and a discharging stage.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating a biomass carbon gas cogeneration system.    Carbonizing furnace (2)    Furnace body (3)    First spiral cooling conveyor (4)    Silicate fiber layer (31)    Light refractory brick layer (32)