In recent years, China has carried out urban renewal in an orderly manner. Based on the new stage, to accelerate the construction of a low-carbon innovative society under the urban renewal, we should improve the low-carbon indicator system, deepen the transformation of existing urban communities, and enhance the urban low-carbon innovation capacity. Based on the review and reference of the evaluation system of low-carbon related pilot work, the practice of low-carbon community index system in foreign countries, and the existing research and practice of other Chinese scholars on the existing community low-carbon index system, this paper proposes the construction principles of low-carbon community evaluation index system. This paper summarizes the influencing factor framework of the construction of energy-saving buildings, low-carbon transportation and low-carbon living environment in the process of low-carbon existing communities, and selects the secondary and tertiary indicators according to the influencing factors. A set of low-carbon community index system is proposed to evaluate the existing community, and the operability of the evaluation index system is verified by questionnaire survey