【正文】 environmental protection and social justice collectively. And then, based on the characteristics of sustainable transportation system, how congestion pricing can contribute to economic growth, environmental protection and social justice is examined. Examination result shows that congestion pricing is a powerful way to promote the sustainable development of urban transportation system. 1. Introduction Urban transportation is a pressing concern in mega cities around the world. Along with China’s rapid development of urbanization and motorization, traffic jams has bee a more and more serious problem, resulting in greater time delay, increase of energy consumption and air pollution, decrease of reliability of road work. In many cities traffic congestion is seen as a hindrance to economic development. Numerous methods can be used to address congestion and reduce transport density, including building new infrastructure, improving maintenance and operation of infrastructure, and using the existing infrastructure more efficiently through demand management strategies, including pricing mechanisms. Congestion pricing has long been proposed as an effective measure to bat traffic congestion. The principle objective of congestion pricing is to alleviate congestion by implementing surcharge for the use selected congested facilities during peak time periods. By shifting some trips to offpeak periods, to routes away from congested facilities, or to higheroccupancy vehicles, or by discouraging some trips altogether, congestion pricing schemes would result in savings in time and operating costs, improvements in air quality, reductions in energy consumption and improvements in transit productivity. There are lots of successful applications in some countries and regions in the rest of the world. Following Singapore in the early 1970s and Norwegian toll rings in the mid1980s, the city of London introduced its area toll in February 2020。 hence the best scheme design may be different for each application city. As can be seen, social justice is most difficult to address, and practices indicate that the revenue from road pricing plays a crucial role. If the revenue is recycle to permit investment in public transport, or maintenance of higher service levels, it helps to provide a clear alternative, which both reinforces the impact on mode choice and reduces the concern of those on whom the charge is imposed. If it is used to improve the road infrastructure, it can be seen that traffic diverted from the controlled area is being catered for. If it is used to pay for environmental improvements, it will help to reinforce the wider benefits of charging. How to use the revenue and improve the efficiency of urban transport system is play a key role in sustainable development. 5. Conclusions With the continuing growth in traffic demand and decreasing scope for expansion of road infrastructure, traffic congestion is not a problem that will go away soon. Congestion pricing is proposed as an important demandmanagement strategy for tackling traffic, but still receives strong social and political opposition because of the uncertain impacts on economic development, environmental protection and social justice. This paper reviews the relationship between congestion pricing and three goals of sustainable transportation system, and the results show that congestion pricing is a promising traffic management strategy, which can promote urban economic development, improve environmental quality and reduce inequity. Recent advances in electronic toll collection (ETC) technologies have made congestion pricing technologically feasible. It is safe to predict that ing decades will witness an increasing number of implement or attempts to implement congestion pricing. The design and evaluation of congestion pricing will require a deeper understanding of the direct and indirect impacts on sustainable development. Acknowledgement This work was supported by the Young Talents Project of Fujian province (2020F3078). Appreciation is also extended to reviewers for their helpful ments and suggestions on improving this paper. References [1] Spaethling D (1996)