NOVELTY - Catalyst comprises an 0.1-10 wt.% active ingredient, 1-15 wt.% an additive, and balance of carrier; where the active ingredient is a noble metal ruthenium or rhenium; the additive includes I group main elements, II group main elements, II sub group elements, III sub group elements or VII sub group elements. The carrier is cerium oxide, zirconium oxide or cerium-zirconium composite oxide.    USE - The catalyst is useful for hydrogenation methanation of carbon dioxide, ammonia feed gas purification and fuel cell feed gas purification (claimed).    ADVANTAGE - The catalyst has high selectivity for carbon dioxide (claimed), and methanation activity.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) preparing catalyst, comprising (i) dissolving cerium and zirconium nitrate in deionized water to obtain 0.1 M solution, dissolving 10-12 times of urea in deionized water, mixing the resulting two solutions under stirring, then heating in an oil bath to 90-110 degrees C, refluxing for 2-4 hours, washing, filtering, drying overnight at 100-120 degrees C, calcining at 400-600 degrees C for 2-6 hours, and thoroughly grinding to obtain carrier particles, (ii) impregnating the catalyst components in precious metal halogen-free precursor solution or ethanol solution for 1-12 hours, or depositing the catalyst components along with sodium carbonate or urea precipitate on the carrier, or coating or loading the carrier, additives and active component on the wall of overall structure of the metal honeycomb catalyst, to obtain semi-finished catalyst product, (iii) drying the semi-finished catalyst product at 120 degrees C for 12-24 hours, and calcining at 450-550 degrees C for 2-6 hours, and (iv) reducing the semi-finished calcined catalyst at 300-700 degrees C with hydrogen stream for 4-10 hours, to obtain the catalyst, or reducing the semi-finished calcined catalyst with 2% hydrazine hydrate solution at room temperature for 12-24 hours, then washing 5-10 times, and then drying at 120 degrees C for 12-24 hours, to obtain the above-mentioned catalyst;    (2) use of catalyst for hydrogenation methanation of carbon dioxide; and    (3) use method of the catalyst for hydrogenation methanation of carbon dioxide, comprising carrying out the process at pressure of 0.1-5 MPa, temperature of 60-700 degrees C, space velocity of 1000-25000/hour, hydrogen/carbon monoxide molar ratio of 3-4.