Abstract: Taking the central Yunnan urban agglomeration as the research object, this paper explored the spatiotemporal evolution characteristics of new urbanization and green low-carbon coupling coordination in the central Yunnan urban agglomeration from 2012 to 2021 by constructing an evaluation system for new urbanization and green low-carbon indicators, and using entropy method and coupling coordination degree model. Then, it constructed a random effects panel Tobit model to further analyze the influencing factors of the coordinated development of new urbanization and green low-carbon coupling in various states and cities of the central Yunnan urban agglomeration. The results showed that the spatial pattern of the comprehensive development level of new urbanization and green low-carbon was as follows: “high in the center and low in the surrounding areas”, “high in the west and low in the east”; The coupling coordination degree of the region was relatively high, and it exhibited a distribution characteristic of “one pole with multiple cores”. In terms of influencing factors, it could be concluded that urbanization level, economic development, science and technology education, and green ecology had a strong positive correlation with the coupling coordination degree, while industrial development, urban-rural gap, and carbon emissions had a strong negative correlation with the coupling coordination degree.