NOVELTY - The biomass granulator comprises a granulating chamber comprising a die set and a ring mold, where the die is formed with an annular groove. The ring mold is arranged in the annular groove. An inner side of the ring mold is formed with a discharging hole to connect a pressing wheel assembly, a lower pressure disk and eccentric wheels. A rotating shaft is connected with a wheel disk. Two ends of the eccentric wheel are rotationally connected with an upper pressure plate and a lower pressure disk. The eccentric wheel is located in the granulating chamber.    USE - Biomass granulator.    ADVANTAGE - The biomass granulator can change transmission direction, and has high torque, uniform stress and deformation resistance.    DETAILED DESCRIPTION - The biomass granulator comprises a granulating chamber comprising a die set and a ring mold, where the die is formed with an annular groove. The ring mold is arranged in the annular groove. An inner side of the ring mold is formed with a discharging hole to connect pressing wheel assembly, a lower pressure disk and eccentric wheels. A rotating shaft is connected with a wheel disk. Two ends of the eccentric wheel are rotationally connected with an upper pressure plate and a lower pressure disk. The eccentric wheel is located in the granulating chamber. A drive mechanism is provided with a motor and a transmission mechanism. An output end of the motor is connected with the transmission mechanism. The transmission mechanism is connected with a rotating shaft. The eccentric wheels are symmetrically arranged on the lower pressing disk. The wheel assembly comprises a third location plate arranged between the upper pressure plate and the lower pressure disk. The location plate and the eccentric wheel are connected with each other. The transmission mechanism comprises a speed reducing gear group and a conical gear group. An output end of the motor is connected with the conical gear group. The rotating shaft is connected with the speed reducing gear group.