A meat grinder is a highly versatile and widely applicable meat processing equipment in the meat product production industry. It relies on screws to push the raw meat from the hopper box to the pre cutting plate, and through the rotation and compression of the screw, the orifice plate and the cutter rotate relative to each other, thereby cutting the raw meat into particle shapes, ensuring the uniformity of the meat filling. Different combinations of orifice plates can achieve the desired different meat filling requirements.