The invention discloses a anadium trioxide supported nano nickel, a preparation method thereof, electrode material and a supercapacitor prepared therefrom.The method includes such steps as 1) dissolving vanadium source, nickel salt and organic ligand in solvent to obtain mixed slurry, mixing vanadium source, nickel salt and organic ligand to obtain mixed slurry, mixing that mixed slurry with the mixed slurry to obtain mixed slurry, mixing the mixed slurry with the mixed slurry to obtain mixed slurry, mixing the mixed slurry with the mixed slurry to obtain mixed slurry. 2) transfering that mixed slurry into a kettle for reaction to obtain an organic frame compound contain vanadium and nickel, cooling, filtering, washing and dry; 3) calcining that sample in an inert gas to obtain vanadium trioxide supported nanometer nickel. As that production process is simple, the reaction conditions are easy to control and the cost of raw material is low, template and surfactant are not required in the preparation process, the obtained product has good consistency and no environmental pollution, and is favorable for batch production; The specific capacitance of the vanadium trioxide loaded nanometer nickel electrode material of the supercapacitor can reach 478F/g, and the specific capacitance can still be maintained at more than 94% after 3000 charge-discharge cycles. The specific capacitanceof the supercapacitor electrode material of the vanadium trioxide loaded nanometer nickel electrode material of the supercapacitor reaches 478F/g.