Lightweight car trunk cover plate structure

The utility model relates to the technical field of car trunk cover plates, and discloses a light-weight car trunk cover plate structure which comprises a cover plate body, the cover plate body is composed of a first supporting plate and a second supporting plate, the first supporting plate is formed by welding a plurality of supporting pipes arranged at equal intervals in a staggered mode, the supporting pipes are aluminum alloy pipes, and the second supporting plate is connected with the first supporting plate. The two second supporting plates are fixed to the upper end and the lower end of the first supporting plate correspondingly, the second supporting plates are PP foaming composite plates, and the surface of the cover plate body is wrapped with non-woven fabric. And an open groove is formed in one side of the cover plate body, two cavities are formed in the open groove, and the two cavities are located on the sides, away from the first supporting plate, of the two second supporting plates corresponding