Core foamed concrete thermal insulation building block

The utility model discloses a core foamed concrete thermal insulation building block, which comprises a shell which is of a cube structure and is of a through hollow structure without an upper bottom surface and a lower bottom surface; the heat insulation plate is in a cross shape, the heat insulation plate is fixed in the shell so as to divide the shell into four cavity structures with the same size, and a plurality of vertical protrusions arranged in the height direction of the shell are arranged on the surface of the heat insulation plate at intervals so that the surface of the heat insulation plate can form an uneven distribution form; the protrusions on the two adjacent sides of the heat insulation plate are arranged in a staggered mode. And the foamed concrete base block is formed by filling a cavity between the shell and the heat insulation plate with foamed concrete. The building block has the advantages of being good in heat preservation effect, high in strength, firm in overall combination and the l