NOVELTY - Carbon-resistant ultra-fine nano-tungsten carbide material, is claimed. The material is prepared by: (i) dissolving tungsten source in deionized water and adding into ethanol, concentrated aqueous ammonia and surfactant, stirring uniformly, adding resorcinol, stirring and adding formaldehyde at room temperature for 8-28 hours to obtain mixed solution; (ii) pouring the mixed solution into a hydro-thermal reactor and reacting at 80-120 degrees C for 4-15 hours to obtain a polymer; and (iii) carrying out high-temperature carbonization of polymer at 400-900 degrees C under carbon monoxide atmosphere.    USE - The nano-tungsten carbide material is useful as: electrocatalytic nitro-group reduction reaction; and carrier in preparing molybdenum catalyst e.g. methanol fuel cell anode catalyst (all claimed).    ADVANTAGE - The material is stable under high-temperature.    DETAILED DESCRIPTION - Carbon-resistant ultra-fine nano-tungsten carbide material, is claimed. The material is prepared by: (i) dissolving tungsten source in deionized water and adding into ethanol, concentrated aqueous ammonia and surfactant, stirring uniformly, adding resorcinol, stirring and adding formaldehyde at room temperature for 8-28 hours to obtain mixed solution, where the tungsten source is ammonium metatungstate, sodium tungstate or tungsten chloride, the surfactant is sodium dodecyl benzene sulfonate, cetyltrimethylammonium bromide or P123, the volume ratio of ethanol, deionized water, concentrated aqueous ammonia and formaldehyde is 4-5:10:0.04-0.06:0.1-0.2, the amount of tungsten source to the volume dosage of deionized water is 0.001-0.004 g/ml, the amount of surfactant to the volume dosage of deionized water is 0.0004-0.001 g/ml, and the amount of resorcinol to the volume dosage of deionized water is 0.01-0.015 g/ml; (ii) pouring the mixed solution into a hydro-thermal reactor and reacting at 80-120 degrees C for 4-15 hours to obtain a polymer; and (iii) carrying out high-temperature carbonization of polymer at 400-900 degrees C under carbon monoxide atmosphere.