As an important link of power engineering, substation low-carbon evaluation research is an inherent requirement for realizing the strategic goal of dual-carbon, and also an important support for promoting the energy revolution. Based on the life cycle evaluation (LCA) theory, this paper summarizes the research progress of low-carbon evaluation in substation, and discusses the evaluation index construction and evaluation method. Firstly, the whole life cycle of substation is decomposed in stages, relevant planning index data is collected, and the low-carbon evaluation index system of substation is screened and constructed through qualitative and quantitative analysis. Then, the appropriate evaluation index model is selected, the weights are determined by combining subjective and objective methods to get substation scores, and the low-carbon situation of the substation is divided into zero carbon, near-zero carbon, low carbon and other levels, and the low-carbon evaluation model of the substation is determined. Provide support for the scientific construction of subsequent substations and power engineering in China, and help the substation project to further reduce carbon.