NOVELTY - A dye-sensitized solar cell light anode comprises titanium dioxide nanoporous thin film and a dye monolayer deposited on the transparent conductive glass. The dye monolayer is deposited by a nanometric silicon dioxide barrier layer on which a second dye monolayer is absorbed to form the dye-sensitized solar cell light anode.    USE - A dye-sensitized solar cell light anode.    ADVANTAGE - The barrier layer, which is formed between dye-sensitized nano-crystalline porous thin film and electrolyte, effectively inhibits the reverse composition from electron in thin film to electrolyte so that reaction is performed along the direction facilitating the electronic transfer, and enhances the dye absorbing quantity by the re-sensitizing on the surface of the nanometric silicon dioxide to improve the photoelectric converting performance of the whole dye-sensitized solar cell. The dye-sensitized solar cell light anode is prepared by a method that has mild reaction condition, simple operation, and safety and reliability.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the dye-sensitized solar cell light anode, comprising:    (A) placing the titanium dioxide nanoporous thin film with grain size of 10-50 nm and thickness of 10-50 mu m in ethanol solution of 1x 10-5 to 1x 10-3 mol/L of dye to soak for 1-24 hours, washing by absolute ethyl alcohol to dry;    (B) placing the dye-sensitized nanoporous thin film in a mixture of ethyl orthosilicate and cyclohexane at volume ratio of 1:10 to 1:50, adding surface active agent (1-50% the volume of mixture), soaking for 20-60 minutes, adding ammonia (40-70% the volume of ethyl orthosilicate), soaking at room temperature for 1-12 hours, and reacting to deposit one layer of nanometric silicon dioxide layer; and    (C) soaking the nanoporous thin film in ethanol solution (1x 10-5 to 1x 10-3 mol/l of dye), washing with absolute ethyl alcohol to dry and form the dye-sensitized solar cell light anode.