Door opening construction structure of heat preservation and sound insulation system

The utility model discloses a door opening construction structure of a heat preservation and sound insulation system. The thermal insulation and sound insulation system comprises a thermal insulationand sound insulation layer and a concrete protection layer, an angular isolation piece used for protecting the edge of the heat preservation and sound insulation layer is arranged at a door opening ofthe wall body. Right-angled back supports for mounting the angular separators are arranged on the outer side of the wall body; the right-angle back support is supported on a reinforced concrete flooron the outer side of a wall, the angular isolation piece is installed on the right-angle back support through bolts, the heat preservation and sound insulation layer is laid between the angular isolation piece and the reinforced concrete floor, and the concrete protection layer is laid on the upper portion of the angular isolation piece and the upper portion of the heat preservation and sound insulation layer. The angular