The sun-proof coating of a kind of heat insulation and method of preparing, are suitable for various kinds of vehicles, shipping, all kinds of pots in the petrochemical industry, the trough, the appearance of the pipeline, and the outer walls of all kinds of buildings, the tent, the appearance of the tarpaulin insulates against heat, decorate and scrbble to decorate using; insulate against heat sun-proof coating add 1-10% to the ultraviolet ray of China of sunlight in invention this, visible light, the infrared ray has extremely easy glimmer powder which reflect the protective screen result, and 1-30% of the hollow ceramic thermal insulator, its paint into things one pre-pressing vacuum layer that surface form that put, a very effective one isolate the sun ray radiation hot and heat radiation of air conduct; Insulate against heat sun-proof coating hot person who reflect more than 89%, heat conduction coefficient 0.03 only, under the equal condition with is it is it insulate against heat the sun-proof coating is compared originally to put to scribble originally, object surface temperature drops 10-20deg.C, temperature drops 4-10deg.C within the object, originally insulates against heat the sun-proof coating has good heat resistance, wearability, the swimming skill is put, it is clean since.