The soils on fluviolacutrine deposit,in Kunshan region,South Jiangsu,formed in the Holocene.According to the analysis of their soil properties,¹⁴C age and pollen spectrum,and micromorphology the soils of Holocene can be divided into four forming stages: initial,transitional and typical ones of deposition soil formation,as well as forming stage of modern cultivated soils.The four forming stages are consistent with early Holocene,the beginning of mid-Holocene,optimum mid-Holocene and late Holocene.At the same time,they reflect changes in the environment during the Holocene including climate change,and vegetation evolution under intensive cultivation of human.It should be emphasizld that rice cultivation here has a log history.