Abstract: This paper discussed the design,manufacture technology,reflective heat-insulating mechanism and insulating effect of the reflective heat-insulating coating system on ship.Test result showed that the reflective heat-insulating coating system which being made up of 725-H06-21,725-H67-09,725-BS67-23 has excellent performance of depressing temperature and saving energy when applied on the outer surface of hull and super-stratum building.