Saturation is derived from water content and dry density of soil.There are two patterns of varying process of saturation, one is related with variation of moisture state, other is related with density state.There are 23 groups UU triaxial compression tested with experimental specimens in six different moisture states and four density states were conducted according to five classes of surround pressure as 100, 200, 300, 450 and 600 kPa.Experimental results show that shear strength parameters of remolded unsaturated cohesive soil vary regularly in certain extent with saturation, but not available to be presented by one or two simple functions.Cohesion has a strong nonlinear relation with moisture state related saturation and a quasi-linear relation with density state related saturation respectively.Internal friction angle has a strong nonlinear relation with moisture state related saturation and a weak nonlinear relation with density state related saturation respectively.