NOVELTY - A biomass granulator comprises a motor and a main machine, where the main machine comprises a gear box and a granulating device, the gear box comprises gear box component, transmission shaft and drive shaft, the transmission shaft and driving shaft are placed mutually parallel and connected via gear box. The motor and the transmission shaft are connected through transmission mechanism. The granulating device comprises a cabinet, a ring mold and at least a pressure roller in axial direction of the ring mold and mutually axial direction of the drive shaft.    USE - Biomass granulator (claimed).    ADVANTAGE - The biomass granulator has long service life.    DETAILED DESCRIPTION - A biomass granulator comprises a motor and a main machine, where the main machine comprises a gear box and a granulating device, the gear box comprises gear box component, transmission shaft and drive shaft, the transmission shaft and driving shaft are placed mutually parallel and connected via gear box. The motor and the transmission shaft are connected through transmission mechanism. The granulating device comprises a cabinet, a ring mold and at least a pressure roller in axial direction of the ring mold and mutually axial direction of the drive shaft. The ring mold is a housing and the internal space of the housing is divided into 2 regions that are an outside material extrusion area and the ring mold inner ring die, the material extrusion area, a feed connection and a grain area are connected to the discharge port, the pressure rollers outer diameter is smaller than the inner diameter of the ring die, and the pressure roller is rotating corresponding to the inner wall. A belt wheel or chain wheel is connected between the motor and the transmission shaft of transmission mechanism. The pressure roller mechanism comprises a round pedestal, a pressure roller shaft and pressing plate. The granulator is provided with a scraper and scraper driving device, where the scraper device comprises a scraper driving motor, a small gear and a large gear. The granulator further comprises a feeding cover on one side of the ring mold, where the feeding cover is provided with a feeding port, which is located on the upper portion of material extrusion area and further comprises a machine base provided with a hollow frame.