Corn pest trapping device

The invention discloses a corn pest trapping device which comprises a first vertical rod, a fixing cone used for reinforcing is movably installed on the inner side of the lower end of the first vertical rod, a pest trapping disc used for trapping reptile pests is installed on the lower portion of the outer surface of the first vertical rod in a spliced mode, and a plurality of pest trapping boxes are installed on the inner side of the pest trapping disc in a spliced mode. A cylindrical electric net used for trapping and killing flying pests is mounted on the upper portion of the first vertical rod in a spliced mode, the first vertical rod and the cylindrical electric net are in butt joint and fixed through a second vertical rod, and a pest trapping lamp used for trapping the flying pests is fixedly mounted in the middle of the inner side of the second vertical rod; an insect trapping barrel for trapping and killing flying insects is arranged at the upper end of the cylindrical power grid; the corn pest trappi