Abstract:In order to systematically study the heavy metal pollution status of agricultural land soils in Beijing area, the distribution law, pollution characteristics and health risk of heavy metals in farmland soils in Beijing were studied based on the literature data related to heavy metal pollution in agricultural land soil in Beijing since 2000, and the integrated use of spatial analysis, geo-accumulation index and human health risk assessment methods. The results show that the average contents of eight heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in farmland soil are all lower than the screening value, but their contents in most of the examining points have exceeded the background value and show significant spatial variation. The geo-accumulation index pollution evaluation results show that the accumulation risks of soil Hg and Cr are the highest in the region, with pollution points accounting for 82% and 67%, respectively. The accumulation risk of other heavy metals is relatively low. Under all kinds of exposure routes, the non-carcinogenic and carcinogenic risks caused by individual heavy metal or combined effects are acceptable. However, compared to other heavy metals, soil As has the highest potential carcinogenic and non-carcinogenic risks. Therefore, in order to achieve sustainable green and safe production of regional agricultural activities, it is recommended that relevant departments should strengthen the monitoring, control and management of regional soil As contents.