NOVELTY - Preparation of transparent polyaniline counter electrode-base two-sided dye-sensitized solar cell involves placing 4-aminothiophenol-modified fluorine-doped tin oxide conductive glass substrate in monomer solution formed by dissolving aniline monomer with doped acid aqueous solution, adding initiator, polymerizing, drying to obtain polyaniline transparent counter electrode, coating titanium dioxide colloid on glass substrate, calcining, immersing obtained film in dye, combining counter electrode and obtained photoanode, and adding electrolyte between counter electrode and photoanode.    USE - Preparation of transparent polyaniline counter electrode-base two-sided dye-sensitized solar cell used as power generating device (claimed).    ADVANTAGE - The method enables economical preparation of transparent polyaniline counter electrode-base two-sided dye-sensitized solar cell with excellent light transmittance, electroconductivity and electrocatalytic activity of counter electrode, and high dye excitation rate and excitation electron density and photoelectric conversion efficiency of 7.5-8%, by simple process.    DETAILED DESCRIPTION - Preparation of transparent polyaniline counter electrode-base two-sided dye-sensitized solar cell involves purifying aniline monomer to remove polymerization initiator, and dissolving aniline monomer with doped acid aqueous solution to form monomer solution (A) in which the molar ratio of doped acid and aniline monomer is 8:1, preparing 4-aminothiophenol ethanol solution with concentration of 0.01-0.05 M, placing fluorine-doped tin oxide or indium-tin oxide conductive glass substrate in 4-aminothiophenol ethanol solution for 1-8 hours, removing the substrate, washing using deionized water, placing the obtained 4-aminothiophenol-modified fluorine-doped tin oxide or indium-tin oxide conductive glass substrate in monomer solution (A) under stirring condition, adding initiator into the monomer solution (A), polymerizing at 0-30 degrees C for 5-6 hours, washing obtained polyaniline electrode, drying to obtain polyaniline transparent counter electrode, coating titanium dioxide colloid on the upper portion of the glass substrate, and calcining to form titanium dioxide film having thickness of 5-15 mu m, immersing titanium dioxide film in 0.2-0.5 mM dye to form dye-sensitized titanium dioxide photoanode, combining polyaniline transparent electrode and dye-sensitized titanium dioxide photoanode, and adding electrolyte between polyaniline transparent electrode and dye-sensitized titanium dioxide photoanode. The volume ratio of aniline monomer and doped acid aqueous solution is 1:100-300. The molar ratio of aniline monomer and initiator is 1:0.5-1.5.