The invention discloses a dye-sensitized solar cell for recovering energy from sewage. According to the dye-sensitized solar cell for recovering the energy from the sewage, a chirality TiO2 nanotube with the Ag/AgCl load serves as the anode, a P/TiO2-Pt electrode serves as the cathode, and the dye-sensitized solar cell is formed in the mode that the chirality TiO2 nanotube with the Ag/AgCl load, the P/TiO2-Pt electrode and an externally-connected circuit are connected. According to the dye-sensitized solar cell for recovering the energy from the sewage, due to the fact that the chirality TiO2 nanotube serves as the anode, the surface plasma resonance effect of the chirality TiO2 nanotube is improved, and the oxidation effect of the anode on organic pollutants is improved; the organic matter on the anode loses electrons to carry out an oxidation reaction so as to generate matter such as H2O and CO2, the electrons are obtained by the cathode, a reduction reaction is carried out, and heavy metal ions such as copper ions are reduced to generate H2. According to the dye-sensitized solar cell for recovering the energy from the sewage, the degradation effect of a fuel cell on the organic matter is improved, the energy is recovered from the sewage, safety and high efficiency are achieved, and harmful substances are not generated.