Heat-insulating reflflective coating is made of acrylic emulsion, titanium dioxide, hollow glass beads and additives. Coatings belong to waterborne single component, non toxic and harmless,the reflflectivity of the coating to solar heat can reach 90%, and the temperature in sunny weather is above 33℃,compared with the indoor temperature without heat insulation, the indoor temperature with reflflective heat insulation coating can be 3-10℃, and the roof temperature difference is 10 -25℃. The higher the temperature, the more obvious the heat insulation effect.