NOVELTY - Biomass carbonizing furnace comprises combustion chamber and carbonizing chamber. The carbonizing chamber has upper part provided with coke feeding port, raw material circulating conveying device and drying chamber; and bottom part provided with coke discharging opening. The drying chamber has upper part provided with drying chamber material inlet and water outlet; and has bottom part provided with drying chamber material outlet. It is further provided with drying chamber raw material circulating conveying device.    USE - Biomass carbonizing furnace used for pyrolyzing biomass raw material.    ADVANTAGE - The biomass carbonizing furnace improves biomass raw material carbonizing speed and biomass raw material carbonization quality.    DETAILED DESCRIPTION - Biomass carbonizing furnace comprises combustion chamber and carbonization chamber provided above combustion chamber. The combustion chamber has one end provided with fuel inlet and is provided with fire grate and combustible gas combustion device. The carbonizing chamber has upper part provided with coke feeding port, raw material circulating conveying device, and drying chamber; and bottom part provided with coke discharging opening. The drying chamber has upper part provided with drying chamber material inlet and water outlet; and has bottom part provided with drying chamber material outlet. It is further provided with drying chamber raw material circulating conveying device. The drying chamber discharging opening is connected with coking feeding port. The coking raw material circulating conveying device and drying chamber raw material circulating conveying device have same structure and comprising driving shaft, driven shaft and annular chain on drive shaft and driven shaft. The driving shaft is connected with motor. The annular chain has cloth board. The carbonization or drying chamber is fixed to two ends of material distributing plate and further connected with driving shaft and driven shaft respectively. It is provided with annular chain scraping plate.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of biomass carbonizing furnace.