As a new green,pollution-free,and convenient construction technology,polyurea coating is increasingly widely used for waterproofing and anti-corrosion in engineering.In China,polyurea materials are much less widely employed in automobiles than abroad.For example,only a small number of high-end pickup trucks in China adopt such materials.This paper investigates the utilization of the nano-modified aliphatic polyurea in the roofs of vehicles,which can not only be waterproof and prevent corrosion but also insulate the heat and reduce noises.Additionally,the application can reduce the emission of VOC and reduce the energy consumption of traditional topcoat baking.