Abstract: At present, the state has put forward specific construction standards to improve the quality of municipal road construction in an all-round way, while relevant units have also introduced effective protective measures.However, the municipal road subgrade and pavement often bear a lot of automobile pressure, so it is necessary to build flat pavement and solid subgrade to meet the driving needs of the whole city. Based on this, the design of subgrade and pavement must follow the scientific and reasonable design principles, carry out design activities in strict accordance with the first pass standards, and build a road that truly meets the operation needs, service life needs and driving comfort.