Abstract: Through analysis of the economic and social development of Xiong'an New Area, following its planning and construction requirements of "promoting green, low carbon production and lifestyle", from four dimensions of economic development, green production, social development and green life, 27 indicators inflecting the main characteristic indicators of the social and economic carrying capacity in the New Area, such as GDP per capita, water consumption per 10 000 yuan GDP, urbanization rate, coverage rate of geothermal resource heating, were extracted by the quantitative methods of correlation analysis and principal component analysis. An evaluation index system of the social and economic carrying capacity of Xiong'an New Area, which conformed to regional characteristics and could reflect the coordinated development degree between social and economic systems, was constructed and used to evaluate the social and economic carrying capacity of the New Area from 2014 to 2018. The results showed that the social and economic carrying capacity of the New Area had shown a steady upward trend, with an average annual growth rate of 12.81%. Especially after 2016, the speed of economic construction and social development had been improved, and investments in green production and green life increased in 2017. Thus the social and economic carrying capacity of the New Area in 2018 was significantly enhanced, 37.66% and 25.01% higher than that in 2016 and 2017 respectively. Finally, the promotion countermeasures were proposed to improve the social and economic carrying capacity of the New Area by sustainably optimizing and adjusting of industrial structure and forming a green production mode, strengthening environmental governance and ecological restoration and promoting a green lifestyle mode, so as to provide a reference for sustainable development of economy and society in the New Area.