The utility model discloses a rotary long-horned beetle trap. The device comprises a collecting cup, a cross plate, a funnel and a rain shielding cover, a cup opening of the collecting cup is connected with the bottom end of the funnel; the bottom of the cross plate is mounted at the upper end of the funnel; the rain shielding cover is mounted at the top of the cross plate; a cavity is formed in the middle of the cross plate; a hanging ring is arranged at the top of the cavity; an upper rotating rod and a lower rotating rod are arranged at the middle joint of the crossed plate; the upper rotating rod and the lower rotating rod are located on the upper side and the lower side of the cavity respectively, an upper rotating bearing is arranged in the middle of the lower side of the rain shielding cover, the top end of the upper rotating rod is rotatably connected to the upper rotating bearing, a lower rotating bearing is arranged in the middle of the upper end of the funnel, and the bottomend of the lower rotating rod is rotatably connected to the lower rotating bearing. By adopting the technical scheme, the smell of the lure can be pushed to different directions, pests in different directions are trapped and killed, and the trapping effect is improved.