The deposit features of Jiangsu marine soft soils was investigated based on Holocene epoch marine geomophology characteristics; the sediment history of Jiangsu marine soft soils is about 6000 years. The depth of embedment and thickness of soil layer of Jiangsu marine soft soils are of fluctuant varying because of effect of many times of transgressions and regressions. Through analysis and research of laboratory and field test data
Jiangsu marine soft soils are of features of high water content
high compression
high void ratio
high liquid limit
low bearing capacity and sensitive warp clay. Otherwise
we present some suggestion for ground improvement methods of design and construction.