Green building prefabricated concrete block

The utility model relates to the technical field of buildings, in particular to a green building prefabricated concrete block which comprises a concrete layer, air holes are formed in an inner cavity of the concrete layer, grooves are formed in the top and the bottom of the two sides of the concrete layer, and reinforcing meshes are fixedly connected to the top and the bottom of the inner cavity of the concrete layer. A sound insulation layer is fixedly connected to the inner side of the reinforcing mesh, a heat preservation layer is fixedly connected to the inner side of the sound insulation layer, and the sound insulation layer comprises a polyvinyl chloride layer, a glass fiber layer and a polyester fiber layer. Through cooperation of the concrete layer, the air holes, the grooves, the reinforcing mesh, the sound insulation layer, the polyvinyl chloride layer, the glass fiber layer, the polyester fiber layer, the heat preservation layer, the polypropylene fiber layer and the polyurethane fiber layer, the g