The invention discloses a pest trap for lepidoptera pests on tea trees. The pest trap comprises multiple sticky plates and an installation support where the sticky plates are installed. The installation support comprises a top plate, a bottom plate and a supporting pipe fitting fixedly connected with the top plate and the bottom plate. The top plate is provided with multiple upper clamping grooves. The bottom plate is correspondingly provided with multiple lower clamping grooves. One sticky plate with glue layers arranged on both sides is clamped between each upper clamping groove and the corresponding lower clamping groove. An inducing core is arranged on the installation support. Multiple axial insertion grooves are formed in the peripheral surface of the supporting pipe fitting. One side of each sticky plate is further inserted in one corresponding axial insertion groove. The pest trap further comprises a supporting frame. The supporting frame comprises a supporting table. A stand column is arranged in the middle of the supporting table. The stand column is sleeved with the supporting pipe fitting, and the supporting pipe fitting can rotate relative to the stand column. A motor with a speed reducer is installed on the supporting table. The lower end of the supporting pipe fitting extends out of the bottom plate to be fixedly connected with a worm gear. A worm is fixedly connected to an output shaft of the speed reducer. The worm and the worm gear are matched. The pest trap can trap pests at multiple angles and is good in trapping effect and convenient to maintain.