NOVELTY - Preparing platinum-hydrogen molybdenum anode porous array catalyst (I), comprises e.g. functionalizing proton exchange membrane by hydroxy group, dipping it in polyvinyl benzene latex, strewing and drying, then preparing a molybdenum bronze solution by using concentrated hydrochloric acid, ammonium molybdate and sodium borohydride solutions, dipping the prepared proton exchange membrane in the hydrogen molybdenum bronze solution, strewing, dipping in toluene and hexachloroplatinic acid ethanediol solutions respectively, and then processing ultrasonically.    USE - (I) is useful for direct-methanol fuel cell.    ADVANTAGE - The method: is simple and does not use the high polymer as dispersing agent and stabilizing agent; and uses the hydrogen molybdenum porous array catalyst (HxMoO3) as platinum carrying support. The catalyst: has regular geometrical appearance, high homogeneity, specific surface area and uniformly distributed platinum sub-layer; and is loaded on the carrier for assembling the cell or pile.    DETAILED DESCRIPTION - Preparing platinum-hydrogen molybdenum anode porous array catalyst of formula (Pt-HxMoO3) (I), comprises: (i) functionalizing proton exchange membrane via hydroxy group; (ii) dipping the functionalized proton exchange membrane in polyvinyl benzene latex and strewing for 5-20 minutes, then vertically drawing out at 1-4 cm/minute of lifting speed, and drying in vacuum at 60-90 degrees C for 1-2 hours; (iii) adding condensed hydrochloric acid to ammonium molybdate solution to obtain a molybdate solution, then adding sodium borohydride solution to the molybdate solution to obtain hydrogen molybdenum bronze solution, heating and evaporating the water in the gel to form wet gel, dipping proton exchange membrane of the step (ii) in the hydrogen molybdenum bronze solution for 1-4 minutes, taking out and removing the remained gel, then strewing and drying at normal temperature for 0.5-5 hours and dipping in methylbenzene solution for 1-2 hours; (iv) dipping proton exchange membrane obtained in the step (iii) in hexachloroplatinic acid ethanediol solution, ultrasonically processing for 5-10 minutes, dropping sodium borohydride solution, strewing for 2-8 hours, taking and washing with deionized water, and drying at 90-110 degrees C for 4-12 hours.    x = not defined.    An INDEPENDENT CLAIM is also included for the catalyst (I) prepared by the above method.