NOVELTY - A soluble compound is chosen to obtain an aqueous solution of metal cations, and the solution is heated. A polymerizer is added to the solution, and pH is regulated using aqueous ammonia. The obtained mixture is mixed. The mixed solution is heated at room temperature to 200 degrees C, and stirred to obtain a stable electrospinning solution or sol. The electrospinning solution or sol is provided on a substrate, to obtain electrospun precursor samples. The samples are dried and sintered, to obtain a porous structure solid-oxide fuel cell cathode.    USE - Electrospinning preparation of cathode for solid oxide fuel cells.    ADVANTAGE - The method enables simple and economical preparation of cathode having large specific area, high porosity, adjustable aperture, and uniform structure, which improves oxygen transmission performance and catalytic performance of cathode, reduces polarization resistance, and improves performance of fuel cell in intermediate-low temperature range. The cathode material has porous structure and controllable micro structure and thickness.    DETAILED DESCRIPTION - According to the chemical composition of cathode material and composite cathode material, a soluble compound is chosen to obtain an aqueous solution of metal cations contained in stoichiometric ratio, and the solution is heated at room temperature to 200 degrees C while stirring. A polymerizer is added to the solution, and pH is regulated to 4-7 using aqueous ammonia. The obtained mixture is mixed. The addition amount of polymerizer is 1-8 times the molar quantity of total metal cations in the solution. The mixed solution is heated at room temperature to 200 degrees C, and stirred for 2-10 hours to obtain a stable electrospinning solution or sol with a viscosity of 0.1-4 Pa.second. The electrospinning solution or sol is provided on a substrate, to obtain electrospun precursor samples. During electrospinning, the voltage is 3-25 kV, the distance between spinneret and substrate is 4-20 cm, and the liquid speed is 0.02-5 mL/hour. The samples are dried in air or vacuum furnace at room temperature to 200 degrees C for 1-10 hours, and sintered at 4700-1100 degrees C in air or atmosphere, with sintering time of each step being 1-10 hours, to obtain a porous structure solid-oxide fuel cell cathode. The heating or cooling speed rate is 0.5-10 degrees C/minute.