[Objective] The spatial and temporal succession pattern and prediction of ecosystem carbon storage in Miyun Reservoir Basin from 1985 to 2035 were carried out to provide scientific basis for the integrated protection and restoration of mountains, rivers, forests, fields, lakes, grasslands and sands and the optimization of ecological compensation standards in the basin under the goal of ' double carbon ' in the basin.[Methods] The InVEST-PLUS model was used to analyze the spatial and temporal evolution pattern of carbon storage in the basin from 1985 to 2020, and the change trend of carbon storage under three scenarios ( natural development, cultivated land protection and ecological protection ) in 2035 was predicted.[Results]①From 1985 to 2020, the ecosystem carbon storage of Miyun Reservoir basin showed a continuous growth trend, and the carbon storage increased by 4.03×107 t in 35 years. The largest contribution to carbon storage was forest land, grassland and cultivated land, accounting for about 98 % of the total carbon storage.②In 2035, the carbon storage of the basin still tends to increase under the three simulation scenarios. Relatively speaking, in the protection scenario, due to the increase of forest land area, the carbon storage remains at a high level.③The carbon storage in the basin shows a spatial pattern of ' high in the south-central part and low in the west and northeast '. The south-central part corresponds to the mountainous landform of the basin, which is the core area of water conservation, and the forest coverage rate is high, while the west and northeast are mainly distributed in grassland, cultivated land and urban construction land, with relatively low carbon storage[Conclusion] Carbon storage is consistent with the spatial pattern of land use. The consolidation and improvement of ecosystem carbon storage can be promoted by increasing forest and grassland through ecological construction, controlling the transfer of forest land and reasonably controlling the expansion of construction land.