The invention discloses a corn agricultural production cutting rod device, which comprises a cutting box, wherein a sound insulation wood plate layer is fixedly arranged on the outer surface of the cutting box; an opening is formed in one end surface of the cutting box; a conveyor belt device is horizontally fixed to the opening; two ends of the conveyor belt device respectively extend to the inside and outside of the cutting box; two baffles are symmetrically arranged on two sides of the conveyor belt device; the two baffles are fixedly connected with the cutting box; a pressing mechanism isarranged on the two baffles; two shredding mechanisms are symmetrically arranged in the cutting box; the two shredding mechanisms are staggered; a discharge port is formed in the lower side of the endsurface of the cutting box far away from the opening; and a sealing door is fixedly mounted on the discharge port. The cutting action is completed in the cutting box, and the cutting box is subjectedto sound insulation operation, so that fine dust splashing and larger noise cannot be generated during cutting, and the cutting effect on corn stalks is higher.