The influence of features on the objectives, current density, water management, and mass transport phenomena are investigated. The condition of the reaction site, output current density, and mass fluxes can explain the changes in the resistance and water saturation at the interface of GDL and the flow field. The conditions of the reaction site affect MEA resistance and the rate of oxygen consumption. The mass flux within GDL changes GDL resistance. The fixed amount features are porosity 0.68, temperature 323 K, pressure 1 atm, cathode stoichiometry 3, and anode stoichiometry 2.62. In the last stage of this paper, it will be determined that these values are optimum. For the resistance, interactions are not as important as the solitary effect of parameters. Significant interactions for water saturation are the combination ε -P, ε -T, ε -Sa, ε -Sc, Sc -Sa, Sa -P, and P-T, and they will be shown. The selection of axis for parameters is adjusted to bring a better view.