The experiment with specially treated soil aimed to study the effects of different concentrations of Pb on seed germination and seedling growth,and to analyze the change of eco-physiological index and Pb contents in aboveground part and roots of Lolium perenne.Results showed that at the lower concentration of Pb(500 mg/kg),seed germination and seedling growth of Lolium perenne were improved observably,but at the higher concentration of Pb(500～2 000 mg/kg),seed germination and seedling growth were restrained distinctly.The restraining effect was intensified with the increase in Pb concentration.Meanwhile,MDA and soluble monosaccharose contents were increased with the increase in Pb concentration.Chlorophyll content of leaves appeared to increase at the beginning stage and then decreased.Lolium perenne had some of enrichment capability.When Pb concentration was 500 mg/kg,relative accumulation of the aboveground part reached its maximum.