The effects of lead (Pb) stress on some physiological indicators of five fast-growing willow clones (Salix ‘Zhuliu’,Salix jiangsuensis CL J-172,Salix jiangsuensis CL J-795,Salix matsudana var.anshanenensis and Salix matsudana Koidz) were studied in a pot experiment.The results showed that:(1)the POD,SOD and CAT activities of five clones increased initially and then decreased with the increase of lead concentrations;The Salix ‘Zhuliu’ was better than other four clones;(2)with the increases of lead concentrations,soluble protein,proline and soluble sugar contents of five clones significantly increased at the lower lead concentrations,and reduced at the higher concentrations.Salix ‘Zhuliu’ and Salix jiangsuensis CL J-172 had higher resistance to lead stress compared to other three clones at 1 500 mg·kg^-1 of lead;(3)MDA content of five clones generally increased with the increase of lead concentrations,but the increase rate was different (The lowest and the highest were Salix ‘Zhuliu’ and S.matsudana Koidz);(4)with the increase of lead concentrations,chlorophyll content of five clones increased initially and then decreased;Salix ‘Zhuliu’ has seen its decrease rate less than those of other four clones at 1 500 mg·kg^-1 of lead;(5)the root activity of five clones increased initially and then decreased with the increase of lead concentrations;The root activity of Salix ‘Zhuliu’ clone was the strongest;(6)the accumulation to Pb²⁺ of five willows had different performance under the same lead concentration,and the Salix ‘Zhuliu’ was better than others;(7)comprehensive evaluation of each physiological parameters indicated that the lead ions tolerance order are:indicated that:Salix ‘Zhuliu’>Salix matsudana var.anshanenensis>Salix matsudana Koid>Salix jiangsuensis CL J-795>Salix jiangsuensis CL J-172.