Intake excess of arsenic (As) can damage human health and may cause diseases. Routes of As intake are respiratory for dust and fumes, and oral for As in water, soil, beverage, and food. Consumption of vegetables from contaminated soils may be harmful to consumers health. In 1999, a serious As poisoning incident due to As contamination happened, more than 300 people were hospitalized in Dengjiatang, Chenzhou City, Hunan Province. Some 50 ha of paddy fields were contaminated and the farmlands were wasted for 4 years, though the source of As contamination had been cut off by local authority in time. Only a few vegetable fields can still be cultivated on the fields. There are few reports on revegetation or potential risk study of wasted As-contaminated farmland.We investigated the As concentration of plants and soils on the fields with different levels of As contaminations. Processes of natural revegetation of waste paddy and health risk of cosumed vegetables cultivated were investigated in the As-contaminated erea. It was found that revegetation in As-contaminated soil was significantly affected by the As-contaminated level. The amount of plant species was small and the weed biomass was the greatest in soil contaminated with low arsenic. The weeds grown on soil contaminated with medium level of As had the highest amount of plant species. The amount of plant species was the least and biomass of weed was the lowest in soil contaminated with high level of As. The species diversity was reduced by the present of Paspalum sp., a dominated weed, in the wasted fields. As concentrations in the edible parts of most vegetables were higher than the maximal permissible limit of As in food. Intake of As from consumed vegetables was 4.1 μg/kg body wt. per day in spring and summer, and 2.9 μg/kg body wt. per day in autumn and winter, respectively, both of which exceeded the level (2.1 μg/kg body wt. per day) set by World Health Organization (WHO).