Prefabricated sandwich laminated slab

The invention relates to a prefabricated sandwich laminated slab. The prefabricated sandwich laminated slab comprises a reinforcing mesh, a first concrete layer, a sandwich board, a second concrete layer, steel tie bars and hanging rings, wherein the hanging rings and the steel tie bars are arranged on the mesh face of the reinforcing mesh and poured into a whole through the first concrete layer, the sandwich board is laid on the surface of the first concrete layer and provided with penetrating holes corresponding to the steel tie bars and the hanging rings, the second concrete layer is poured above the sandwich board, the first concrete layer and the second concrete layer are connected through concrete columns formed by the penetrating holes, and the steel tie bars and the hanging rings extend out of the second concrete layer. The sandwich board is designed in the prefabricated laminated slab, so that the heat preservation and sound insulation performance of the laminated floor slab is improved, and a second