Novel composite wall

A novel composite wall belongs to the technical field of buildings. The utility model aims to provide a novel composite wall body which adopts a three-layer sandwich composite wall body by changing the structure of the wall body and has the characteristics of good thermal insulation performance, structural performance and light weight. The heat-insulation and heat-storage sandwich structure comprises an outer-layer conventional concrete layer, a middle sandwich heat-insulation layer and an inner-layer heat-absorption and heat-storage layer, an outer-layer steel wire mesh is arranged in the outer-layer conventional concrete layer, an inner-layer steel wire mesh is arranged in the inner-layer heat absorption and storage layer, and the middle sandwich heat preservation layer is arranged between the outer-layer conventional concrete layer and the inner-layer heat absorption and storage layer; and plastic connecting pieces are mounted at the upper and lower ends of the outer-layer steel wire mesh and the inner-lay