The modified Tessier sequential extraction method was adopted to study chemical speciation of heavy metal elements (Cr, Ni, Cu, Zn, Cd, Pb) in the typical soil of Zoumadai, a state agricultural base in Quanzhou, and comparison was made between the heavy metals in biological availability. Results showed that Cr and Ni were dominated by residual form, and rarely existed in other forms; Cu and Zn were also mostly in the residual from, while the least in the exchangeable fraction for Zn, and in the carbonate fraction for Cu; Pb existed mainly in residual and Fe-Mn oxides forms, while Cd in exchangeable and carbonate forms. All the heavy metals, except for Cd, were comparatively stable under normal natural conditions.