NOVELTY - Membrane electrode assembly has an electrode having lamination of electroconductive porous layer (1), conductive layer (2), and catalyst layer (3), which is joined to surface(s) of cation exchange membrane. Ratio (A, in mass%) of water repellent with respect to the electroconductive porous base material in the layer (1) is less than the ratio (B, in mass%) of water repellent with respect to carbon material in the layer (3). Ratio (B) is less than the ratio (C, in mass%) of water repellent with respect to the carbon material in the layer (3).    USE - For fuel cell (claimed) e.g. polymer electrolyte fuel cell and methanol-type fuel cell, used has power supply for cogeneration system.    ADVANTAGE - The fall of cell voltage of the fuel cell at the time of continuous operation is suppressed.    DETAILED DESCRIPTION - Membrane electrode assembly has an electrode having lamination of electroconductive porous layer, conductive layer, and catalyst layer in order, which is joined to surface(s) of cation exchange membrane, such that the catalyst layer optionally contacts the cation exchange membered. The electroconductive porous layer contains electroconductive porous base material and water repellent. The conductive layer contains carbon material and water repellent. The catalyst layer contains carbon material, catalyst metal, cation exchange resin and water repellent. The ratio (A, in mass%) of water repellent with respect to the electroconductive porous base material in the electroconductive porous layer is less than the ratio (B, in mass%) of water repellent with respect to carbon material in the catalyst layer. The ratio (B) is less than the ratio (C, in mass%) of water repellent with respect to the carbon material in the catalyst layer. An INDEPENDENT CLAIM is included for manufacture of membrane electrode assembly.    DESCRIPTION OF DRAWING(S) - The figure shows a model of cross section of the electrode used for membrane electrode assembly.    Electroconductive porous layer (1)    Conductive layer (2)    Catalyst layer (3)