Sandwich heat-insulation composite shear wall and construction technology thereof

The invention discloses a sandwich heat-insulation composite shear wall and a construction technology thereof. The sandwich heat-insulation composite shear wall comprises a prefabricated composite shear wall outer leaf plate, a heat-insulation layer, a heat-insulation connecting piece, a middle cast-in-place layer and a prefabricated composite shear wall inner leaf plate. The sandwich heat-insulation composite shear wall is characterized in that the middle cast-in-place layer comprises a middle reinforcing mesh sheet, the heat-insulation connecting piece is arranged in the outer leaf plate, the heat-insulation layer, the middle cast-in-place layer and the inner leaf plate, the heat-insulation connecting piece comprises a cylindrical connecting piece body and a limiting wheel, the connecting piece body or the limiting wheel is connected with a steel bar anchoring ring, and the steel bar anchoring ring is used for being connected with the middle reinforcing mesh sheet. After the heat-insulation connecting piece