Abstract: Security early warning of heavy metal in non-environmental pollution vegetable soil in Hebei Plain for the coming 20 years was carried out by synthetic research methods of field survey, chemical examination in lab and GIS. The results showed that atmospheric wet and dry deposition were the most important exogenesis input way of Cd in vegetable soil in Hebei Plain, and its contribution accounted for 66.36%. The sequence of output fluxes of Cd was root vegetables> leaf vegetables> fruit vegetables. The forecasting data of Cd accumulation in the non-environmental pollution vegetable soil in Hebei Plain 20 years later would conform to the national standard (the People’s Republic of China Safety qualification for agricultural product-environmental requirements for origin of non-environmental pollution vegetable GB/T 18407.1—2001), the content of Cd in the surface soil 20 years later would be 1.6 times as much as that of present, accumulated by the speed of 30% every decade. Areas with obviously cumulative quantity increase would concentrate in the central and eastern regions in Hebei. Moreover, the content of Cd in soil without greenhouse would be 3.7 times as much as that in greenhouse. To sum up, Cd in soil from atmospheric wet and dry deposition in Hebei Plain would potentially threaten the non-environmental pollution vegetable areas, therefore we should carry out strict and dynamic monitoring and pollution source control. Furthermore, the regional layout of different vegetable planting patterns (open field vegetables or greenhouse vegetables) should be optimized according to the cumulative quantity increase.