A membrane electrode assembly for a fuel cell includes an electrolyte
membrane having ionic conductivity and a pair of gas diffusion electrodes
having gas diffusivity and electric conductivity. Each of the pair of gas
diffusion electrodes is bonded to one side or the other of the
electrolyte membrane in a thickness direction. A bonding force for
bonding at least one part of an outer circumferential area of the gas
diffusion electrodes to the electrolyte membrane is set to at an inferior
level to that of the bonding force for bonding a central area of the gas
diffusion electrodes to the electrolyte membrane, so that an area of the
electrolyte membrane facing the at least one part of the outer
circumferential area of the gas diffusion electrodes can be protected
from damage.