The invention discloses a double-shaft shredding machine for shredding cylinders, and belongs to the technical field of material treatment equipment. The double-shaft shredding machine comprises a stand, a pressure plate, a contact, a hydraulic cylinder, a supporting rod, knife rolls and a supporting plate, and further comprises a guide pipe, wherein a connecting block and a lug are arranged on the pressure plate; the connecting block of the pressure plate is hinged to a piston rod of the hydraulic cylinder; the end, facing the knife rolls, of the pressure plate is connected with the contact in a threaded manner; one end of a cylinder body of the hydraulic cylinder is hinged to the stand; one end of the supporting rod is fixed to the pressure plate through the lug; the other end of the supporting rod is hinged to the supporting plate; the supporting plate is fixed to the stand; and the guide pipe stretches from the top end in the pressure plate to the bottom end and is connected with the contact in a threaded manner. According to the double-shaft shredding machine, on one hand, utilization is simple, operation is convenient to achieve, and disassembly and change are relatively convenient to achieve; and on the other hand, when the double-shaft shredding machine is utilized to shred materials, the spherical or cylindrical materials are pressed more stably, and the knife rolls shred the materials effectively.