In order to build the north section of Jinlong Avenue (connecting line of Shanghai - Chengdu Expressway - Longfengba National Highway 318) located at the north of the central urban area of Enshi into a core infrastructure to guide and drive the development of the surrounding areas, firstly, the functional positioning and design concept of the road are determined according to the requirements of "ecology, modernity, smoothness and characteristics". On this basis, the horizontal and vertical designs of the road is introduced, the different cross-sectional layout forms adopted in the different sections of the road are specially introduced. The methods and design ideas adopted have the reference significance for the design of high-standard urban road in the mountainous areas.