NOVELTY - A catalyst is prepared by using silicon oxide molecular sieve as template and aminopropyl ethyl orthosilicate as modifying agent, controlling reaction condition of ethyl orthosilicate and template, diluting ammonia trimethylsiloxy in ethanol solution, reacting at 20-80 degrees C, stirring, separating, washing and drying solid product to obtain modified silicon oxide molecular sieve; adding soluble metal salt of iridium or ruthenium in de-ionized water; mixing solution of reducing agent in iridium or ruthenium salt solution, reacting for 1-24 hours, and standing; and separating solid product.    USE - Method for preparing catalyst (claimed) used as solid polymer electrolyte water electrolysis anode catalyst used in regenerative fuel cell (RFC), super capacitor, sensor, and photo-electro catalytic field.    ADVANTAGE - The method uses metal oxide having regular appearance, and large specific surface area and porosity.    DETAILED DESCRIPTION - Preparing catalyst comprises (A) using silicon oxide molecular sieve as template and aminopropyl ethyl orthosilicate as modifying agent at a mass ratio of 0.05:0.4, controlling reaction condition of ethyl orthosilicate and template, diluting ammonia trimethylsiloxy in 0.5-4 wt.% ethanol solution, reacting at 20-80 degrees C, stirring for 0.5-8h hours, separating, washing and drying solid product to obtain modified silicon oxide molecular sieve; (B) adding soluble metal salt of iridium or ruthenium in de-ionized water; (C) mixing solution of reducing agent (sodium borohydride or potassium borohydride) in iridium or ruthenium salt solution, reacting for 1-24 hours, and standing the obtained solution for 0-6 days; (D) at 10-60 degrees C, separating solid product, washing with de-ionized water or ethanol until the pH value is 7, drying at 40-80 degrees C to obtain noble metal/noble metal oxide and silicon oxide composite solid powder; (E) roasting the solid powder at 400-800 degrees C at 1-5 degrees C/minute for 2-6 hours to obtain noble metal oxide and silicon oxide composite; and (F) adding the composite into sodium hydroxide solution, etching using hydrogen fluoride, drying at 40-80 degrees C, and washing to obtain final product ruthenium or iridium metal oxide.