The invention relates to a permanent bamboo-based composite bearing plate. The permanent bamboo-based composite bearing plate comprises assembly bamboo canes, fiber gridding cloth and a cementing material, wherein the assembly bamboo canes are formed by longitudinally cutting bamboos, the bamboo canes are vertically placed during assembly, and first gaps are formed between the adjacent bamboo canes at intervals; the fiber gridding cloth is attached to the upper surfaces and the lower surfaces of the assembly bamboo canes and completely wraps the side surfaces and the end surfaces of the assembly bamboo canes from the peripheries; the cementing material is poured into the first gaps, as well as the upper surface and the lower surface of the outer side and the peripheral side surface of thefiber gridding cloth, the cementing material in the first gaps forms thin-wall connecting supporting ribs, and the cementing material on the upper surface and the lower surface of the outer side and the peripheral side surface of the fiber gridding cloth forms a bearing protection bonding layer. The permanent bamboo-based composite bearing plate not only can give consideration to bearing strength,but also can realize the advantages of energy conservation, environmental protection, safety, low consumption, high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, seepage resistance and high fire resistance.