In the recent, as a world demand of energy resources has been transformed from fossil fuels to hydrogenbased clean energy resources, a huge attention has been attracted to increase the performance and decrease a production cost of core materials in fuel cell technology. The utilization of reinforced composite membranes as electrolytes in the polymer electrolyte membrane fuel cells can reduce the use of high cost perfluorosulfonic acid (PFSA), mitigate the cell impedance, and improve the dimensional stability as well as the interfacial stability, giving rise to achieve both an improved performance and a reduction of production costs of the fuel cell devices. In this study, we investigate the effects of physical characteris tics and cell performances according to the various ionomer solvents in the solution based manufacturing process of reinforced composite electrolyte membrane.