Metal/dimension stone composite material prefabricated part for island protection

The utility model relates to a metal/dimension stone composite material prefabricated part for island protection. The device comprises a body, the cuboid-shaped body is coated with a fluorocarbon paint protection layer. The exterior of the fluorocarbon paint protection layer is coated with a mortar protection layer; wherein the body is composed of metal-based cells and dimension stones; the dimension stones are fixedly mounted in the metal-based box grids through the bonding material layers; the whole metal-based box grid is of a cuboid box grid structure which is composed of a plurality of unit grids and is provided with an upper layer and a lower layer. Each cell is integrally of a box-type structure with an opening in one end; wherein openings of cells on the upper layer of the metal-based box cell are upward, openings of cells on the lower layer of the metal-based box cell are downward, a block stone is arranged in each cell, the shape and the size of each block stone are matched with those of an inner ca