The implementation of green and low carbon in road traffic field covers the entire process of planning, design, construction, operation and maintenance management. Guided by the ecological priority and green development, the construction of Xiongan New Area is explored and practiced in the aspects of guiding the planning conception, driving the design innovation, upgrading the construction technology and intelligentizing the operation and maintenance management. Taking the road traffic project in the start-up area of Xiongan New Area, Xiongan Station and Xiongan Intercity Station as the examples, the specific practices of green low-carbon concept in the project are expounded. The design parameter index system under the green low-carbon concept is proposed, which can provide the reference for the construction of the other cities and the new area.