Abstract:The high elasticity modified asphalt compactable ultrathin cover has the good crack resistance and slip resistance, which is the research hotspot in the field of expressway prevention and maintenance technology. In combination with the practical situation of Guiyang, Expressway Maintenance Project, the construction technology of the high elastic modified asphalt compactable ultrathin cover is analyzed from its material properties and construction technologies, and the test road section is detected. Its pavement properties all meet the standard requirements. This technology can be popularized in the expressway preventive maintenance engineering in Guangxi.