The invention discloses a hoop standard granulator including: a rack, a pedestal, a main motor and an upper cover. A material feeding mechanism is arranged on the top of the rack. A pressing mechanism, a flow guiding mechanism, a transmission mechanism and a lubricating mechanism are arranged in the rack. The pressing mechanism includes a circular mould, a plurality of circular mould holes formed in a side wall of the circular mould, a plurality of pressing rollers arranged on the inner side of the circular mould and matched with the circular mould, and two roller mould gap adjustment bolts arranged on the two ends of each pressing roller. The transmission mechanism comprises a main shaft driving the pressing rollers to rotate, a hollow shaft transmission wheel connecting the main shaft to the pressing rollers, and a linkage mechanism linking a motor shaft of the main motor and the main shaft. The linkage mechanism includes a basin gear connected to the bottom of the main shaft, an angle gear engaged with the basin gear, an angle gear shaft driving the angle gear to rotate, and a coupler connecting the angle gear shaft to the motor shaft of the main motor. The hoop standard granulator reduces noise and improves transmission efficiency. The gap between the circular mould and the pressing rollers is convenient and reliable to adjust, thereby improving granulation quality and efficiency.