The results of the seventh census show that in 2020，the proportion of the elderly population aged 65 and over in Beijing has reached 13.3%，which is close to the middle aging stage. In this context，the proportion of the working-age population aged 15-64 in Beijing has dropped from 79.6% in 2015 to 74.8% in 2020，showing an accelerated downward trend. The balance of labor supply and demand in the future will be more challenging. Based on the current population planning and economic planning of Beijing，this report forecasts the labor supply and demand of Beijing from 2021 to 2050 respectively. It is predicted that during the “14th Five-Year Plan” period，the supply of labor in Beijing will increase slightly，and the supply and demand of labor will be basically balanced. From then on until 2050，labor supply will continue to decline，and the imbalance of “supply exceeds demand” will become more and more prominent. Furthermore，this report simulates the various demographic and economic parameters required for an ideal equilibrium state，showing that efforts need to be made from both the supply side and the demand side to promote the balance of labor supply and demand. In terms of supply，we need to promote the employment of older working age and female population，raise labor participation rate，and boost labor supply scale；at the same time，invest more in education and vocational training，improve labor quality，and comprehensively enhance labor supply efficiency. On the demand side，development is the best solution to promote technological progress and the transformation of economic growth patterns，thereby reducing employment elasticity and shortening labor demand.