Co-extrusion-molded bamboo-plastic combined frame structure beam

The invention relates to a co-extrusion-molded bamboo-plastic combined frame structural beam which serves as a structural bearing beam and comprises a bamboo-plastic outer ring and bamboo-plastic laminates, the rectangular tubular bamboo-plastic outer ring is located on the outer side, the multiple layers of bamboo-plastic laminates are located on the inner side of the bamboo-plastic outer ring, and a lattice structure is defined by the bamboo-plastic outer ring and the bamboo-plastic laminates. The bamboo-plastic laminate comprises a bamboo-plastic inner ring and bamboo-plastic interlayers, the rectangular tubular bamboo-plastic inner ring is located on the inner side of the bamboo-plastic outer ring, and the multiple bamboo-plastic interlayers are located between the bamboo-plastic outer ring and the bamboo-plastic inner ring; the bamboo-plastic laminate comprises a plurality of bamboo-plastic interlayers, and the plurality of bamboo-plastic interlayers are positioned in the bamboo-plastic outer ring and ar