To investigate the effect of lime and phosphate on the immobilization of heavy metals in lead-smelting polluted soils. A lead-smelting polluted soil(total concentrations of cadmium，copper，lead and zinc were 4.12，81.0，455 and 115 mg·kg-1，respectively)was amended with phosphate and lime(250，500 and 1000 mg·kg-1)and the lime was added simultaneously or with a 15 d interval with phosphate amendment.After incubation，the soil was analyzed. The results indicated that，when lime was added at 250 and 500 mg·kg-1 and with a 15 d interval with phosphate amendment，soil pH and Olsen-P concentrations were greater than those when they were added simultaneously；when the two additives were added with a 15 d interval，the DTPA-Cd concentrations were significantly less(6.63%～11.82%)than that when they were added simultaneously(P<0.05)，however，the DTPA-Zn concentrations of soils amended with a 15 d interval were 17.64%～28.39% greater than that without the interval(P<0.05). The DTPA-Pb and DTPA-Cu concentrations were not affected by the way the additives added.Judged by the variation of soil Cd and Pb availabilities，amendment of the soil with phosphate and 1000 mg·kg-1 lime with a 15 d interval is the optimal immobilization method for the soil studied.The results of this work suggest that，the methodology by which the phosphate and lime are added into soil is crucial for the cadmium immobilization in polluted calcareous soils.