Rain and pest automatic separation device for automatic crop pest detection and forecasting system

The invention discloses a rain and pest automatic separation device for an automatic crop pest detection and forecasting system. The rain and pest automatic separation device comprises a pest trappinglamp, and a box cover, a plurality of layers of rainproof plates and a box body which are arranged from top to bottom, wherein the pest trapping lamp is fixedly arranged on the box cover in a vertically downward manner; the box cover and the box body are fixedly connected through supporting plates; the plurality of layers of the rainproof plates are fixed through the supporting plates and arranged around the outer side of the pest trapping lamp; the top end of each rainproof plate is in a circular arc shape and is bent downwards from an inner side direction; and the rainproof plate located atthe bottommost layer is fixedly connected with the top part of the box body. According to the invention, through arrangement of vertical and transparent rainproof plates, the problem of automatic rain and pest separation in the pest sample collection process of automatic crop pest detection and forecasting works is thoroughly solved.