It's not appropriate to calculate high liquid limit soil's direct filling embankment own deformation with theory of compression and consolidation, for it’s strength is stable with more Wetting-drying Cycles.The reliability of settlement of embankment consolidation is the key to solve the problem of design and construction for direct filling embankment. Combined with project fact, carry on air rate indicator comparative analysis.The calculation formula developed are based on the deformative characteristics and the relationship between soil’s solid, liquid and gas.The settlement calculation results indicate that the method can get better reliable result than layer- wise summation method and integration method.