The utility model provides a pelletizer technical scheme which comprises a feeding bin, cloth bins and a pair of rolls, which is arranged below the cloth bin, wherein the rolls are driven by a motor and a speed reducer; the lower side of each of the rolls is provided with a discharging chute. The proposal is characterized in that the outer surface of each of the two rolls is provided with an elastic flexible mould plate; a corresponding semi-sphere concave mould is respectively arranged on the opposite face of each of the two mould plates; each of the elastic flexible mould plates is a belt type mould plate which is wound on the rolls and belt guiding rolls; each of the elastic flexible mould plates is supported by the rolls and the belt guiding rolls; the number of the belt guiding rolls is at least one. A nip roll is respectively arranged on the inner side of each of the two cloth bins on the two rolls; both sides of the contacting face of each of the elastic flexible mould plates and each of the rolls are provided with toothed racks of the mould plates; a roll tooth which is engaged with each of the toothed racks of the mould plates is respectively arranged on each of the rolls corresponding to the toothed racks of the mould plates; a vibrator is also arranged on the belt type mould plate on the bottom of each of the rolls.