Abstract: To overcome the shortage of current methods which may not be applied in the case of taking adsorption into consideration,a suitable transformation is conducted on the approximate analytical solution which describes one-dimension indoor sandy column dispersion test in the condition of constant injecting concentration and steady seepage,and on the base of this,an analyzing data method is established according to the extreme principle of correlation coefficient.Thia method may be applied to estimate the values of longitudinal dispersivity,retarding coefficient and equilibrium adsorption coefficient if the effective porosity of porous medium is known.