A pot experiment was conducted to study the metabolic responses of soybean to cadmium in two types of soils(alluvial soil and red soil) in Hunan.All physiological indexes were mensurated in the leave of soybean.The results investigated that the growing of soybean was inhibited in all treatments with cadmium.The synthesis of abscisic acid(ABA) and proline(PRO) were simulated in all treatments with cadmium.Peroxidase(POD) activities of soybean growing in red soil with cadmium were stimulated.In the treatments with alluvial soil

POD activities were inhibited with the lower Cd~(2 ) concentrations and stimulated with the higher Cd~(2 )concentrations.ABA and POD were the most sensitive indicators for soybean under cadmium exposure.The total biomass of soybean growing in red soil was less than in alluvial soil.In conclusion

red soil with cadmium has a strong influence on the growth of soybean than alluvial soil.