NOVELTY - An electrolytic oxidizing polymerization process is performed on an electroconductive porous support material (6), to form a fibril-like polymer. The fibril-like polymer is baked and carbon fiber is formed on the electroconductive porous support material. Then, the electroconductive porous support having carbon fiber is immersed in plating liquid and pressure reduction is performed, to form a metal catalyst (5) on the carbon fiber by electroplating. Thus, manufacture of electrode is carried out.    USE - Manufacture of electrode used for polymer electrolyte fuel cell (claimed) used as power supply for electric vehicles and electric power generation systems.    ADVANTAGE - The method efficiently provides the electrode. The polymer electrolyte fuel cell comprising the electrode has excellent battery performance and catalyst performance.    DETAILED DESCRIPTION - An electrolytic oxidizing polymerization process is performed on an electroconductive porous support material, to form a fibril-like polymer. The electrolytic oxidizing polymerization process is performed using a compound having an aromatic ring. The fibril-like polymer is baked and carbon fiber is formed on the electroconductive porous support material. Then, the electroconductive porous support having carbon fiber is immersed in plating liquid and pressure reduction is performed, to form a metal catalyst (5) on the carbon fiber by electroplating. The electrode has carbon fiber and metal catalyst sequentially arranged on the electroconductive porous support material. Thus, manufacture of electrode is carried out. The electroconductive porous support material is a carbon paper. The compound having aromatic ring is selected from aniline, pyrrole, thiophene and/or their derivatives. The baking is performed in non-oxidizing atmosphere. The metal catalyst contains at least platinum.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the polymer electrolyte fuel cell.    Membrane electrode assembly (1)    Separator (2)    Solid polymer electrolyte membrane (3)    Metal catalyst carrying carbon fiber (5)    Electroconductive porous support material (6)