Effects of four amendments, i.e. lime, apatite, montmorillonite and attapulgite, in in-situ remediation of Cu-Cd contaminated soil nearby a copper smelter were studied. Ryegrass ( Lolium perenne L.) was planted in the experiment. Plant absorbability, chemical extractability and concentrations in soil solution of Cu and Cd were cited as indices for evaluation of remediation effect of the amendments. Besides, correlations of contents of exchangeable Cu and Cd in soil and in soil solution with Cu and Cd uptake by ryegrass were also studied. Results show that in treatment of lime at a high dosage (0.4% of the polluted soil of the plow layer), ryegrass showed the best effect in enriching Cu-Cd. Lime significantly lower toxicity of the heavy metals and promoted growth and Cu-Cd bioaccumulation of ryegrass. Amendment of lime and apatite, in all the rate treatments, significantly decreased exchangeability of Cu in the soil; Amendment of lime, apatite and montmorillonite, in all the rate treatments, increased pH of and decreased Cu and Cd concentrations in the soil solution significantly. Cu concentration in the shoots and roots of ryegrass was positively related to soil exchangeable Cu and Cu concentration in soil solution.