The invention discloses a granulator comprising a base, a first motor, a second motor, a feeding device, a supply pipe, a feed pipe, a pressing device and a transmission device. The second motor conveys materials from the supply pipe to the feeding device, and then the materials enters the pressing device to be pressed through the feed pipe; power required by pressing is provided by the first motor and transmitted to the pressing device through the transmission device; the pressing device comprises a main shaft, a circular mould, a main shaft pressure plate connected with the main shaft, two press roller shafts which are arranged in parallel on the main shaft pressing plate, and four press rollers; each press roller shaft is provided with two press rollers, and a distance is left between the two press rollers on each press roller shaft; and six rows of mould holes are formed in the circular mould, every three adjacent rows of mould holes are in one group, and a distance is left between each two groups of mould holes and is equal to that between the two press rollers on each press roller shaft. The granulator is simple to operate, and has the advantages of high production efficiency, low energy consumption and long service life.