NOVELTY - Manufacture of catalyst involves forming catalyst precursor by mixing platinum-containing solution, titanium-containing solution and electroconductive support in solvent, and in which platinum ionic compound and titanium ion compound are supported by electroconductive support, obtaining catalyst precursor by removing solvent, obtaining sintered component formed by supporting the composite component by baking catalyst precursor, and obtaining catalyst in which composite component is supported by electroconductive support, by cleaning sintered component by hydrofluoric acid.    USE - Manufacture of catalyst used for fuel cell.    ADVANTAGE - The method enables efficient manufacture of catalyst, and improves electric power generation performance of membrane electrode assembly.    DETAILED DESCRIPTION - Manufacture of catalyst involves forming catalyst precursor by mixing platinum-containing solution, titanium-containing solution and electroconductive support in a solvent, and in which platinum ionic compound and titanium ion compound are supported by electroconductive support, obtaining the catalyst precursor by removing the solvent from the obtained mixture after mixing process, obtaining sintered component formed by supporting the composite component which contains platinum and titanium oxide by baking the catalyst precursor at 500-900 degrees C by hydrogen gas atmosphere to the electroconductive support after solvent elimination process, and obtaining catalyst in which composite component which contains platinum and titanium oxide is supported by electroconductive support, by cleaning the sintered component by hydrofluoric acid. The manufacture of catalyst involves supporting the composite component containing platinum and titanium oxide to electroconductive support.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of the manufacturing method of catalyst. (Drawing includes non-English language text)    Mixing process (AA)    Solvent removal process (BB)    Firing process (CC)    Cleaning process (DD)    Drying process (EE)