NOVELTY - The structure has a resin-made frame part (24) provided with a thin wall-shaped inner peripheral protrusion (24a) that protrudes along a side of a gas diffusion layer (22b) i.e. porous carbon layer, of a solid polymer electrolyte membrane (18) through a step part. An insulating porous body is made to impregnate an adhesive agent by a buffer layer (26) that is positioned between an outer-periphery edge part (18be) and the inner peripheral protrusion of the resin-made frame part, where the outer-periphery edge part is outwardly extended from an outer periphery end of the gas diffusion layer.    USE - Electrolytic membrane and electrode structure for a polymer electrolyte fuel cell that is utilized as a vehicle mounted fuel cell stack.    ADVANTAGE - The insulating porous body is made to impregnate the adhesive agent by the buffer layer that is positioned between the outer-periphery edge part and the inner peripheral protrusion of the resin-made frame part, where outer-periphery edge part is outwardly extended from an outer periphery end of the gas diffusion layer, so that design of the structure can be simplified, rate of damage of the solid polymer electrolyte membrane can be suppressed, the adhesive agent can be easily positioned in a desired position and adhesive strength of the adhesive agent can be improved, thus improving durability of the structure.    DETAILED DESCRIPTION - The resin-made frame part is made of polyphenylene sulfide (PPS), poly phthalamide (PPA), polyethylene naphthalate (PEN), polyether-sulfone (PES), liquid crystal polymer (LCP), polyvinylidene fluoride (PVDF), silicone rubber, fluororubber or ethylene propylene rubber (EPDM). Hydrocarbon (HC) type electrolyte or fluorine-type electrolyte are arranged in the solid polymer electrolyte membrane.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a polymer electrolyte fuel cell.'(Drawing includes non-English language text)'    Solid polymer electrolyte membrane (18)    Outer-periphery edge part (18be)    Gas diffusion layer (22b)    Resin-made frame part (24)    Inner peripheral protrusion (24a)    Buffer layer (26)