Abstract: To discuss consolidation properties of soft soil,we made consolidation test of the two marine mud soil samples of Zhangzhou and Dongguan.The results of creep curves ε-t show the characteristics of creep attenuation.The pressure and strain curves p-ε show apparent non-linear feature and good index relation.The coefficients of primary and secondary consolidation influenced by load ratio vary with the consolidation pressure and show stage variable characteristics.A new expression of stress-strain-time relation is suggested based on Singh-Mitchell model and using index and hyperbolic function of stress-strain and strain-time relation respectively.Compared with two models above,the subsection model suggested has a better consistency with test results.So it is suitable to describe consolidation deformation properties of two types soil and has the advantage of easiness and conveniences.