With the increasing degree of urbanization, the road network is becoming more and more dense, and adding hub interchanges in urban areas is facing more difficulties. Taking the ancient city hub interchange of Chengpeng Expressway as an example, based on the turning traffic volume, terrain and geological conditions, combined with the "three zones and three lines" and the combination with existing interchanges, two design schemes are proposed. From the aspects of engineering planning, feasibility, and traffic function requirements, the interchange schemes are compared and selected to provide reference for the design of urban expressway hub interchange schemes.