Thermal insulation structural body for fabricated building

The utility model discloses a heat preservation structural body for a fabricated building, which comprises a heat preservation layer, the heat preservation layer is provided with an upper surface and a lower surface which are opposite to each other, and the outer sides of the upper surface and the lower surface are respectively provided with an upper structure enhancement layer and a lower structure enhancement layer which are in a hollow shape. The hollow-out structure is provided with a plurality of penetrating holes penetrating through the upper side and the lower side of the upper structure reinforcing layer or the lower structure reinforcing layer where the hollow-out structure is located, and the upper structure reinforcing layer and the lower structure reinforcing layer are connected through a plurality of supporting connecting pieces penetrating through the heat preservation layer in a penetrating mode. And each bonding layer penetrates through the plurality of through holes in the hollow-out form and