Stone columns composite foundation is analyzed by the developed fully coupled three-dimension effective-stress dynamic analysis procedure; the influence of stone columns design parameter on anti-liquefaction nature of composite foundation is discussed. The research shows that the influence of column length is minor in superficial layer and is major in deep level; under other condition fixed

with the diameter of stone columns increasing

the excess pore water pressure decreases; with the spacing of columns increasing

the excess pore water pressure increases. In engineering design

the ratio of the diameter and spacing of columns should be bigger than 0.27

or the spacing of columns is smaller than 3.75D; with the permeability of stone columns increasing

the excess pore water pressure in different depths decreases; and the influence is stronger with the depth increasing.