In order to provided a theoretical reference for the passive remediation of the farmland contaminated by cadmium and lead, eighteen different materials include lime kind agent, phosphate, iron oxide and clay minerals were used as the soil heavy metal passivators. Results showed that adding the passivators Ca(OH)2, sodium pyrophosphate, CaHPO4 could significantly decrease the available cadmium in soils, and the optimal concentrations were 2%, 1% and 2%, respectively. The passivators FeCl3, NaH2PO4 and CaHPO4 could significantly decrease the available lead in soils, and the optimal concentrations were 3%, 2% and 2%, respectively.

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