NOVELTY - Aluminum titanate buffer layer containing polystyrene microsphere and ethanol are mixed to obtain suspension. The obtained polystyrene microsphere-coated conductive glass is added to mixed solution to obtain conductive glass with titania buffer layer. Hydrochloric acid, deionized water, saturated sodium chloride aqueous solution, butyl titanate, hematid, and tetrabutyl titanate are mixed to obtain precursor. Conductive glass with titania texture buffer layer is added to reaction kettle having precursor, and hydrothermal reaction is performed, to obtain optical anode.    USE - Preparation of optical anode used for dye-sensitized solar cell.    ADVANTAGE - The method economically provides optical anode having excellent incident light absorption efficiency, by a simple process. The dye-sensitized solar cell has excellent photoelectric conversion efficiency.    DETAILED DESCRIPTION - Aluminum titanate buffer layer containing polystyrene microsphere and ethanol are mixed in the volume ratio of l:100, to obtain suspension. A conductive glass is added into the suspension and dried in air. The obtained polystyrene microsphere-coated conductive glass is placed in the oven 80 degrees C for 2 hours. Butyl titanate, absolute ethyl alcohol, diethanolamine and deionized water are mixed to obtain mixed solution. The polystyrene microsphere-coated conductive glass is added into the mixed solution at 1-5 degrees C, dried in using muffle furnace at 400-500 degrees C for 1-4 hours and cooled to room temperature to obtain conductive glass with titania texture buffer layer. The grain diameter of the polystyrene microsphere is 0.2-1 microns. The conductive glass is fluorine-doped tin oxide indium conductive glass. Hydrochloric acid, deionized water, saturated sodium chloride aqueous solution, butyl titanate, hematid, deionized water, and tetrabutyl titanate are mixed and stirred at 5-10 degrees C to obtain precursor. The conductive glass with titania texture buffer layer is added into reaction kettle containing polyfluorotetraethylene lining precursor, and hydrothermal reaction is performed at 120-180 degrees C for 12-18 hours and cooled, to obtain conductive glass. The obtained conductive glass is washed using deionized water and dried at room temperature, and TW2 texture buffer layer is formed using TW2 nano-rod array, to obtain optical anode.