Environment and health of the soil are closely linked with the developments of urbanization,industrialization and agricultural intensivism.In this article,spatial distribut ions of 8 heavy metals(Cd,Cr,Cu,Ni,Hg,Pb,Zn and As)in the topsoil(0~20 cm)in Taicang city,a typical region of the Yangtze River Delta,were analyzed by mean of the geostatistical method,and heavy metal contamination of the soil evaluated comprehensively by means of Fuzzy Mathematical Models.Zn and Cu were distributed lognomally,strong in variability,while Cd,Ni,Hg,As,Cr and Pb distributed nomally,medium in variability.Apart from Cd,Cr and Pb,all the other soil heavy metals exceeded their background levels in concentration,and As ranked first in contaminat ion index and over limit rate.Compound heavy metals contamination of the soil in Taicang was quite severe,and evaluated as Grade One.The results of semivariance analysis showed that Hg and Cd were fit for the spherical model, and the others fitted for exponential model,and the distributions of the 8 heavy metals were correlated in a given spatial range. The Kriging interpolation method was applied to work out heavy metal concentration distribution maps,which indicate that heavy metal concentrations in the soils are closely related to their parent material,soil texture,and organic matter contents and the degree of industrialization,urbanization and agricultural intensivism of a city.