With the introduction of the current pavement technology of Gaoxin Avenue, the causes of the disease are analyzed. The design parameter is estimated according to the monitoring data. Based on the design concept of long-life pavement, the technical and economic comparison is made among three pavement reconstruction schemes, namely overlay construction to repair old roads, reconstruction of fully demolished old roads and reconstruction of partially demolished old roads. Finally, the overall design scheme of continuous reinforced concrete composite asphalt pavement is determined. On this basis, the local disease treatment of the existing road and the pavement structure of special sections are further designed.