The invention provides a pest control device based on a visual device. The pest control device captures environmental pest information through the visual device, and is started based on the pest information to carry out pest trapping; a trapping mechanism designed based on light, sound, pheromone and heat radiation is used for trapping, pests are killed through an inactivation mechanism, and a good pest inactivation function is achieved; pest corpses are collected through a collection box, the pest corpses are recycled and utilized, and good practicability is achieved; the pest corpses are dried through a hot air mechanism, and the weight of the pest corpses is reduced for convenient handling; combined with the nature of the regular operation of the pest control device based on the visualdevice, a solar panel is used for energy supply, a storage battery is used for energy storage, and the device has good economic benefits.