Insect trap for plant protection

The insect trap for plant protection comprises a bottom plate, a supporting column, a telescopic column, a lifting structure, a locking structure, a fixed frame, a sliding frame, a supporting rod, a trap body, a wire spool and a pulley, the supporting column is fixedly connected to the middle of the upper end of the bottom plate, the telescopic column is movably connected to the interior of the supporting column, and the lifting structure is fixedly connected to the lower end of the interior of the supporting column; the lower end of the lifting structure is fixedly connected with the locking structure, the fixing frame is symmetrically and fixedly connected with the two ends of the supporting column, the upper end of the fixing frame is slidably connected with the sliding frame, the sliding frame is fixedly connected with the surface of the telescopic column, and sliding grooves are formed in the fixing frame and the sliding frame. Compared with the prior art, the insect trap has the advantages that not only