Dishwasher antivibration pad model was designed using the three-dimensional modeling function of Unigraphics NX software. Finite element analysis was carried out on the antivibration pad using its advanced simulation module. Deficiencies in stress and deformation were found. The optimization was carried out with the target of model size optimization under the condition of meeting stress and deformation requirement by using the optimization function in UG NX software. The optimization results were verified. The results showed that the optimized products meet stress and deformation requirements. This approach can shorten design cycle. The purpose was to provide reference for similar product design.