This study took Beijing as an example，progressing along the “space-city-people” and “people-industries-city” to focus on Shunyi District，Daxing District，Changping District and Fangshan District.，which were the four key areastounder take the transfer，and aiming to construct an evaluation index system of regional comprehensive carrying capacity from the perpectives of economy，recource and ecology subsystem，Based on entropy-weight TOPSIS model，the comprehensive carrying capacity of the four districts and the innercarrying capacity of three subsystems were evaluated.The following conclusions were drawn：The comprehensive carrying capacity of Shunyi District，Changping District，Daxing District and Fangshan District gradually decreased.Among them，all subsystems of Shunyi District are ranked in the front ranks，and the development of economy，resources and ecology is relatively balanced；the level of ecological carrying capacity of Changping District is outstanding，while the level of economy and resources is relatively general；the level of economic carrying capacity of Daxing District is the strongest，and the resources And the ecological aspect is relatively poor；Fangshan District has an outstanding level of resource carrying capacity，but it is weak in economic and ecological aspects.Finally，according to the empirical study，somerelevant policy recommendations were put forward from three dimensions，which were developing industries，inspiring potential and undertaking population.