Abstract
The supply and demand contradiction of urban transport in China is increasingly prominent. And the urban traffic jam becomes
more and more serious. It affects the normal urban residents, causes aggravating environmental pollution, and influences the normal
operation of the urban logistics seriously. It becomes the restrictive factors of urban economic and social development. Accordingly,
the paper analyzes the current situation of traffic jams, the reasons, and summarized existing countermeasures to solve the problem
of traffic congestion. On this basis, combining with the actual situation of our country and using system dynamics method to
establish the model of urban traffic congestion. And it takes Beijing as an example to find out the suitable countermeasures and
suggestions to solve the urban traffic congestion.