Through determined the activities of urease, phophatase, invertase and catalase by pot-planting, we researched the
effect of Lead (Pb) on Soil enzyme Activities and Chlorophytum comosum on the effect of Pb- pollution soil. The
results showed that Pb pollution apparently advanced the activities of catalase and invertase. Urease activities were
all reduced with the increasing Pb concentration, the activity of urease appears to be more sensitive to pollution than
that of other soil enzymes. The physicochemical indexes, activities of soil urease, phophatase, invertase and catalase,
have responded differently between plant groups and control groups (P < 0.05). In conclusion, urease activity of soil
can be used as the main biochemical indicators of Pb-pollution soil. C. comosum demonstrated outstanding repairing
effects in Pb-contaminated soil.