Abstract: In this experiment,Sedum engleri Hamet and Purple emperor Sedum as test material in different concentrations of heavy metals under the stress of Cd,using the method of greenhouse pot experiment,the growth index were determined.With the purpose of toxic effects of cadmium on two species of Sedum,the main results were as follows：plant height and leaf number were not observably affected under cadmium stress.With Cadmium concentration increased,two kinds of Sedum root,stem,leaf,flower biomass showed a decreasing trend,the higher concentration,the stronger inhibitory effect of Cd on two Sedum biomass.With increasing cadmium concentration,the total length,root surface area,root diameter,root volume,tip number of Purple emperor Sedum and Sedum engleri Hamet were decreased.The root length,root surface area,root tip number of Sedum engleri Hamet were significantly inhibited under high concentrations of cadmium stress.Sedum engleri Hamet and Purple emperor Sedum are potential as a plant repair material.