Abstract:Analysis evaluation of performance and obstacle degree of low carbon city is an important basis for the realization of urban green low-carbon development. Constructing the low carbon city level evaluation index system of economic development, this paper analysis the low carbon city performance of Tianjin and factors which hinder the realization of the goal of low carbon based on the Entropy -weight TOPSIS method and obstacle degree analysis model. The results showed that development level of low carbon city in Tianjin was generally increasing, with the performance index increasing from 0.2306 to 0.6989 during the period from 2008 to 2014. At the same time, the obstacle degree of social progress and energy transformation sustainability increased by the annual average of 24.18% and 7.19%.On this basis, the paper puts forward some countermeasures and suggestions from the aspects of energy efficiency, industrial structure optimization, environmental governance and infrastructure.