With development of the Nuclear industry, heavy metal uranium emissions and diffusion induced uranium contamination of surface soils, which have taken great impact on society and environment. There are some U-contaminated soils in the world, how to remedy U-contaminated soils become a interesting problem in recent years. Phytoremediation technology is a low-cost, safety and environment kindly alternative for the cleanup of U-contaminated soils. Screening of perfect hyperaccumulators is the basic and key for this technology. In this paper, simulation experiments were designed for 1.00×10² mg•kg^－1 U contaminated soil, nineteen plant speices were selected to remove U from the contaminated soils. The results indicated that Lactuca sativa L. can be chosen as uranium hyperaccumulator because its BFS (bioconcentration factors) and TFS (translocation factors) is more than 3 and U concentration in shoots reach 1.67×10³ mg•kg^－1. Ophiopogon japonicus cv, Phaseolus vulgaris L., Iris confusa Sealy and Chlorophytum comosum (Thunb.) as potential species for phytoextraction for U-contaminated soil through genetic engineering, joint-repairing or adding soil amendments would become uranium hyperaccumulators, which may be candidates for phytoremediator.

Key words: phytoremediation, heavy metal uranium, hyperaccumulators, screening, chelator