The catalyst consists of main active component CuO, assistant active components ZnO and oxide of Ce or Zr, and carrier Al2O3. The preparation process of the catalyst includes reaction of the nitrate solution and carbonate solution containing the catalyst components at 60-90 deg.c and pH 7-9; dropping the reaction product into co-precipitator to produce precipitate; and ageing for 2-5 hr, washing, drying, roasting at 300-700 deg.c for 3-8 hr. The produced catalyst has high activity at low temperature, high selectivity, excellent stability, high efficiency and low cost, and is used in vehicular methane reformer of fuel cell vehicle.