This paper builds an indicator system of carbon reduction，pollution reduction，green expansion and growth synergy，and evaluates 16 districts in Beijing in 2021 and 2016. The analysis shows that the comprehensive index in 2021 can basically show the trend that the central urban area ranks first，the ecological conservation area and the urban sub-center are in the middle，and the plain new town is relatively behind. The dynamic comparison shows that the comprehensive index of the central urban area has improved the fastest，followed by the plain new town and the urban sub-center，and the ecological conservation area has improved relatively slowly. This paper believes that it is more difficult to continuously reduce carbon emissions；The synergy effect of pollution reduction and carbon reduction is good，and the task of expanding green and economic growth synergy has a long way to go；The problem of unbalanced and inadequate development between urban and rural areas and between regions is still prominent. The way of collaborative solution needs to be improved and innovated，which is the main challenge for future collaborative carbon reduction，pollution reduction，green expansion and growth. Based on this，the policy recommendations are put forward to further promote the green and low-carbon transformation of energy，promote the value of ecological products，comprehensively promote regional coordination，and deepen the coordinated governance of mountains，forests，fields，lakes，grass and sand.