Abstract: Aiming at the problems of low efficiency, low intelligence and less application of biomass pellet fuel in traditional biomass heating furnaces, a new high-efficiency biomass intelligent heating furnace was designed. The cutting speed of the feeding furnace can be controlled by the cutting motor, and the speed, start and stop of the cutting motor are precisely controlled by the control system based on PLC. Double combustion chamber and double air supply system are adopted to make the fuel burn more fully. The new grate vibration system can shake off the ash generated by biomass combustion into the ash box, so that the fuel accumulated on the grate is scattered, increase the contact area with the air, and improve the combustion efficiency; The heater has high intelligence and convenient operation. Two kinds of granular fuel, bagasse and miscellaneous wood, were used in the experiment. The results showed that the calorific value of miscellaneous wood was higher than that of bagasse, and the combustion was more stable. The thermal efficiency of the biomass furnace is 93.8%, the fuel combustion efficiency is 86%, and the efficient utilization of biomass fuel is realized.