The process of high precision asphalt foaming with multi field condition and multi phase object is a nonlinear kinetic process. To quantify the kinetics relation between design parameters and asphalt foaming result, an engineering method for parameter sensitivity analysis of asphalt foaming was proposed. Based on the theory of multi phase fluid kinetics, modeling the asphalt foaming process with design parameters and coupled field, analyzing the coupled field under different dimensions of asphalt foaming chamber, it has been found that the statistic data of coupled field and experimental data are correlative, which means this model can represent the result of asphalt foaming to some degree. This kinetics model may be used for parameter sensitivity analysis of asphalt foaming and obtaining the sensitivity factors of design parameters.