The distribution of soils in the Yangtze delta is significantly influenced by the land forming age and the effect of new-tectonic movement.according to characteristics of the new-tectonic movement,the Yangtze delta may be divided into eight regions together with their corresponding soils,the regions are shown as follows:Ⅰ.Strongly uplifted mountain area.young soils.Ⅱ.Weakly uplifted hilly area:typical red earth and yellow brown earth.Ⅲ.Relatively stable lower hilly area:meadow yellow brown earth,light meadow soils and red earth.Ⅳ.Subsided Tai-lake depression:hnmic bog soils.Ⅴ.Subsided margins of Tai-lake depression:light meadow soils.Ⅵ.Subsided northern coastal sandy spit area:light meadow soils.Ⅶ.Strongly subsided debouchure area:light meadow soils and meadow saline soils.Ⅷ.Strongly subsided Hangzhou Bay:no sail formed.