Successive extraction method was adopted to study the characteristics of chemical forms of Cd and Pb in alluvial meadow soil and meadow cinnamon soil in the plain of Hebei, and the relationship between the forms of Cd, Pb and factors affect ing it by pot experiment and field sampling.The results showed that Cd, Pb contents of exchangeable form increased and those of carbonate combined and residual forms decreased with the increase of pollution extent in field soils.Cd, Pb contents of exchangeable and carbonate combined forms increased and those of organic and residual forms decreased with the increase of Cd, Pb added concentration in pot soils.Most of Cd was present in the exchangeable form(the order is: EXC > CAB > OXI > ORG > RES), and the most amount of Pb was associated with the carbonate and Fe-Mn oxide combined forms in heavy metal highly polluted soils.In lowly polluted soils, the residual and organic forms of Cd increased significantly (the order is: RES > CAB > ORG > EXC> OXI), and most of Pb was present in Fe-Mn oxide combined and residual forms.The concentration and proportion of the exchangeable and Fe-Mn oxide combined forms in alluvial meadow soil were lower than in meadow cinnamon soil.The major factor which effect on the chemical forms of Cd, Pb in soils were pH and the organic content.