After the 1970s, the world climate is warming, and the earth's energy is drying up. In China's energy consumption, building energy consumption accounts for 30 40% of human energy consumption, improving the thermal insulation performance of buildings is an important way to save energy and improve the use of building functions. The heat insulation coating applied on the surface of the building can effectively reduce the temperature of the building surface and inside. In recent years, with the promotion of building energy conservation, heat insulation coatings have attracted more and more attention because of their advantages such as economy, convenience and good heat insulation effect. Therefore, the research and development of new, composite thermal insulation coatings for human daily life has great practical significance. The thermal insulation board of the existing thermal insulation coating is relatively large, and the organic materials used are flammable, at the same time, the thermal effect is lightenable very quickly, often a year has a good reflection or emissivity, but then its reflection or emissivity decreases every year, about 5-7 years later, the thermal insulation effect will be lost. At the same time, due to the existing thermal insulation coating's poor stain resistance and waterproof effect is also a reason for the sharp decline in thermal insulation effect. How to develop a kind of coating with both waterproof and antifouling function and thermal insulation function is a technical problem in this field.