Waterproof prefabricated superposed shear wall and construction method thereof

The invention provides a waterproof prefabricated superposed shear wall and a construction method thereof. The shear wall comprises a prefabricated superposed shear wall board which is perpendicularly arranged on a bottom board and comprises a prefabricated concrete layer and an insulation foam concrete layer arranged on the prefabricated concrete layer, a first waterproof glue layer smeared on the insulation foam concrete layer and a cast-in-place concrete layer arranged on the first waterproof glue layer. According to the shear wall, the problem that water is absorbed by insulation foam concrete during on-site concrete pouring of the prefabricated superposed shear wall can be solved, the water-retaining property of cast-in-place concrete is improved, and the overall construction quality is improved; and the process is simple and convenient, and cost is low. In addition, an adhesion agent and 903 polymer cement mortar waterproof glue are smeared on the foam concrete layer on the inner side of the prefabricat