Abstract:Based on current situation of Beijing residents’ traffic trip , The paper designs urban traffic trip carbon trading system with practical thinking. It calculates resides’ total allowed traffic trip carbon emissions, creates resident traffic carbon account, sets allocation and payment method, constructs carbon trading market and gives support policy and technical suggestion. Finally, it analyzes the influence of the carbon trade system on resides’ trip mode choice. The meaning is to make traffic trip carbon emissions internalization of externalities, promote residents to improve low-carbon environmental philosophy by economic means, and relieve traffic block and frequent atmospheric haze which are caused by a significant increase of the private car trip proportion. At the same time, it reflects environmental justice and avoids unfairness and inefficiency of license-plate lottery and vehicle restriction rule.