NOVELTY - Producing biomass fuel particle comprises (i) screening the material, drying, cyclone separating and storing; (ii) completely stirring the stored material and granulating in granulation machine; (iii) subjecting the granulated biomass particles to dust-removing, and then screening.    USE - The method is useful for producing biomass fuel particle (claimed).    ADVANTAGE - The method produces biomass fuel particle with high quality and has low failure rate.    DETAILED DESCRIPTION - Producing biomass fuel particle comprises either (i) screening the material, drying, cyclone separating and storing, (ii) completely stirring the stored material and granulating in granulation machine, (iii) subjecting the granulated biomass particles to dust-removing and then screening; or (i) respectively sieving the materials with different softness and hardness degree, drying, cyclone separating and storing, (ii) adding specific amount of auxiliary material using a metering hopper according to different softness and hardness degree of the material, mixing uniformly and stirring, (iii) granulating in granulation machine, and (iv) subjecting the granulated biomass particles to dust-removing, and then screening. An INDEPENDENT CLAIM is also included for a biomass fuel particle producing device, comprising either a pre-processing device, a stirrer, a distributor, at least two granulator, a dust remover, a finished product sieve, a finished product belt conveyer and a finished product storehouse, which are sequentially connected. The pre-processing device is meant for processing the material. The preprocessing device comprises a feeding pit, a wet feeding belt conveyer, a cylinder sieve, a heat preservation air pipe, a drier, a cyclone separator and a storage bin. The storage bin is connected with the stirrer. The pre-treated material is stirred in the stirrer and then pushed into the at least two granulator via the distributor for granulating and molding. The molded material is processed in the dust remover and the finished product sieve. The fuel particles from the finished product sieve are conveyed to the finished product storehouse via the finished product belt conveyer; or at least two pre-processing device, a weighing hopper, a stirrer, a distributor, at least two granulator, a dust remover, a finished product sieve, a finished product belt conveyor and a finished product storehouse, which are sequentially connected. Each pre-processing device is meant for processing the corresponding materials. Each pre-processing device comprises a feeding pit, a wet feeding belt conveyer, a cylinder sieve, a heat preservation air pipe, a drier, a cyclone separator and a storage bin. The storage bin is connected with the stirrer by the weighing hopper. The pre-treated material is stirred in the stirrer after weighing, and then pushed into the at least two granulator via the distributor for granulating and molding. The molded material is processed in the dust remover and the finished product sieve. The fuel particles from the finished product sieve are conveyed to the finished product storehouse via the finished product belt conveyer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the biomass fuel particle producing device.