11 atmospheric particulate matter sampling sites was created around Miyun reservoir to analyze the mineral composition, element concentration and sources of atmospheric particulate matter pollution by using ICP-MS and XRD analysis. The results show that there are many iron minerals and some unweathered minerals which come from the iron ore yard in the northern mountainous area of Miyun in atmospheric particulate matter. In the eastern and southern of Miyun reservoir, the pollutions of Cr, Ni, Co is clearly, the Annual deposition fluxes of them are respectively 417.04g/hm(2). a. 165.90 g/hm(2). a. 52.19 g/hm(2). a, which are much higher than the average of Miyun. Comparing with the upwind and downwind in winter months, the element concentration and mineral composition have a great many of differences between the south-eastern and the north-western, which is caused by the Miyun reservoir. The conclusion was that the atmospheric particulate matter pollutions caused by mining activities and anthropogenic influence of is from Surrounding areas and northern mountainous areas, which is useful to control and reduce the pollution of heavy metals in Miyun reservoir.