Abstract: Based on the results of indoor consolidation tests,we analyzed moisture content, porosity ratio, grain size, compression modulus and Pc of the Yellow River soil,and concluded that the soil is in normal consolidation at 6 m depth, and above this critical depth the soil is over-consolidated while beneath it the soil is under-consolidated. And analysis also indicates that formation of the over-consolidation state is attributable to the influence of the cementation effect and sedimentary environment.And the difference in cementation and in impacted depths of the waves decided over-consolidation inhomogeneity at different depths.