NOVELTY - A transition-metal compound and carrier carbon material, carrier oxide or carrier molecular sieve are mixed and ground to obtain a precursor. Or, a transition-metal carbide is loaded on a carrier by immersion in water or solvent. The solution is stirred, steamed and dried to obtain a precursor of transition-metal carbide. The precursor is thermally decomposed. The temperature is reduced in inert gas to obtain a transition-metal carbide catalytic material loaded on carbon material, oxide, or molecular sieve.    USE - Preparation of transition-metal carbide catalyst material for use in fuel battery electrode reactions, hydrazine decomposition, acetonitrile hydrogenation, and alkene selective hydrogenation (all claimed). The catalyst material can also be used for methanol electrocatalytic oxidation.    ADVANTAGE - The method enables uniform dispersion of catalyst particles on the surface of carrier. The method is simple and easy, and provides catalyst materials having excellent activity.    DETAILED DESCRIPTION - A transition-metal compound and a carrier carbon material, a carrier oxide or a carrier molecular sieve are mixed and ground to obtained a precursor of transition-metal carbide. Or, a transition-metal carbide is loaded on the carrier by the immersing the carbide in water or organic solvent. The mixed solution is stirred and steamed for solution removal, and dried in a vacuum drier to obtain a precursor of transition-metal carbide. The capacity of transition-metal compound is 1-200 wt.%. The precursor of transition-metal carbide is packaged into a fixed bed or fluidized bed reaction pipe, aacetonitrile hydrogenationnd thermally decomposed by microwave in an inert gas or reducing gas. The temperature is reduced to room temperature in the inert gas to obtain a transition-metal carbide catalytic material loaded on carbon material, oxide, or molecular sieve. The transition-metal compound is transition-metal carboxyl compound, transition-metal salt, or transition-metal complex compound. The transition metal comprises tungsten, molybdenum, vanadium, chromium, and/or duplex metal mixed with iron, cobalt and nickel. The carrier carbon material comprises active carbon, black carbon, carbon nanotube, or carbon nanofiber. The carrier oxide comprises alumina, silicon oxide, or their mixed oxide. The carrier molecular sieve comprises MCM series, ZSM series, SBA series, and/or faujasite. The inert gas comprises argon and nitrogen. The reducing gas comprises hydrogen.