The utility model provides a pest killing device for biological control, which belongs to the technical field of
pest control and comprises a connecting shell, a partition plate fixedly mounted on the inner wall of the connecting shell, a mounting column fixedly mounted on the side wall of the partition plate, a clamping groove formed in the bottom of the connecting shell, a mounting frame fixedly mounted on the inner wall of the partition plate and a killing component arranged at the bottom of the connecting shell. The luring
assembly is arranged at the top of the connecting shell. The pest
trapping efficiency is improved through a dual-action mechanism of
sound wave luring and
phototaxis, the frequency-adjustable sounder can release specific wave bands for different pests to achieve accurate luring, and the pests are effectively blocked by the blocking grid plate after entering the
closed space through the optimally-designed pest inlet in cooperation with
light source guiding, so that the pest
trapping efficiency is improved, and the pest
trapping effect is improved. Volatilizable insecticide is adopted in the killing
assembly, it is guaranteed that the insecticide is evenly diffused through a ventilation opening to achieve efficient killing, tenons and clamping grooves are used in cooperation, a surrounding plate can be rapidly detached, and insecticide supplementing and
dead body cleaning are facilitated.