Abstract: To master the law of dynamic changes of the transport sector emissions related indicators and analyze the effect factors of transport carbon emissions, indicators of regional transport carbon emissions were calculated firstly based on the related data of IPCC(Intergovernmental Panel on Climate Change)guideline. Then the STIRPAT(Stochastic Impacts by Regression on Population Affluence and Technology)Model was modified with the introduction of carbon emission efficiency. Least squares regression and ridge regression method were adopted to analyze the factors of transport carbon emissions. Finally, transport carbon emissions were analyzed by numerical examples of Beijing from 2005 to 2014. The results demonstrate the developing state of regional transport carbon emissions and the sequence of influence degree of different factors. The research provides a reference for the transport carbon emission study of other provinces.