TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Parameters: The current density of direct current power supply is 2-50 milliamperes/cm2, Preferred Conditions: The depositing time is 5-90 minutes and the depositing temperature is 10-60 degrees C. The depositing time of each depositing period respectively is 5-120 seconds, the time interval between the adjacent two depositing periods respectively is 2-100 seconds. Preferred Process: The process of depositing the precious metal on the catalyst carrier comprises multiple depositing periods. Before the catalyst carrier is loaded on the catalytic electrode supporting body, immerging the catalytic electrode supporting body via binder latex, drying and sintering. The method of loading the catalyst carried on the catalytic electrode supporting body comprises coating sizing agent containing catalyst carrier on the catalytic electrode supporting body, the drying; sizing agent containing catalyst carrier contains catalyst carrier, Nafion solution and organic solvent whose weight ratio is 1:5-50:20-500.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The weight ratio of the catalyst carrier and the precious metal contained in the precious metal water soluble composite is 1:0.01-1.5, the concentration of the precious metal water soluble composite in aqueous solution is 0.001-0.2mol/L. The load of catalyst carrier on the catalytic electrode supporting body is 2-10 mg/cm2. Preferred Components: The precious metal water soluble composite is water soluble composite of platinum, water soluble composite of rhodium, water soluble composite of palladium, water soluble composite of iridium and/or water soluble composite of ruthenium. The water soluble composite of platinum is platinic chloride, platinichloride, platinum chloride and/or platinum nitrate; the water soluble composite of rhodium is rhodium chloride, rhodium phosphate and/or rhodium nitrate; the water soluble composite of palladium is palladium nitrate, palladium sulfate and/or palladium bromide; the water soluble composite of iridium is chloroiridate acid and/or ammonia chloroiridate; the water soluble composite of ruthenium is ruthenium chloride and/or ruthenium bromide. The catalytic electrode supporting body is carbon cloth, carbon paper or titanium mesh. Preferred Catalysts: The catalyst carrier is activated carbon, carbon black and/or carbon nanotube. Preferred Process: The catalyst carrier is pre-processed before being loaded on the catalytic electrode supporting body, the method of the pre-processing comprises boiling the carbon carrier for 2-5 hours in nitric acid aqueous solution, separating out the carbon carrier and filtering, washing by deionized water till no nitrate radical ion is detected, drying for 1-5 hours at 80-150 degrees C, and grinding for 1-5 hours.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The binder latex is polyfluorotetraethylene latex, hexafluoropropylene latex and/or polyfluoroethylene latex.