Composite heat preservation and sound insulation prefabricated column

The utility model provides a composite heat preservation and sound insulation prefabricated column, and belongs to the technical field of machinery. The problem that in the prior art, stability is poor is solved. The composite heat preservation and sound insulation prefabricated column comprises an inner layer and an outer layer. The inner layer is made of a concrete material and is columnar; theouter layer comprises a first heat preservation cylinder, a second heat preservation cylinder and sound insulation filler which are in a cylinder state. Wherein the inner layer is sleeved with the second heat preservation barrel, the second heat preservation barrel and the inner layer are connected in a close fit mode, the first heat preservation barrel is arranged on the outer side of the secondheat preservation barrel in a sleeving mode, the sound insulation filler is located between the first heat preservation barrel and the second heat preservation barrel, and the heat preservation nail sequentially penetrates thr