Plant roots activities, chlorophyll, SOD and accumulating characteristics of peas were investigated after combined stress with different concentrations of U and Cd in the hydroponic condition. The results showed that the roots activities of pea were higher than that in the control group meanwhile relative to other concentrations could promote the root growth under low concentrations of U and Cd treatment (20 mg/kg). There are no significant effects on the biomass of pea. Along with the increment of concentrations, the contents of U and Cd increase in both parts of the plants and the contents showed roots>the part above-ground. The bioaccumulation factor (BF) and the translocation factor (TF) of pea to U was obviously weaker than Cd.Cited