The invention relates to a method for degrading organic substances by using photoelectric catalysis of a short TiO nano-tube array film electrode, and belongs to the technical field of environment polThe invention relates to a method for degrading organic substances by using photoelectric catalysis of a short TiO nano-tube array film electrode, and belongs to the technical field of environment pol tube length as the electrode, the method has the advantages of low photo-generated charge compound and quick transmission, and shows higher property of degrading the organic substances by photoelecer tube length as the electrode, the method has the advantages of low photo-generated charge compound and quick transmission, and shows higher property of degrading the organic substances by photoelectric catalysis.tric catalysis.lution governance. A cleaned titanium sheet as an anode is placed into an electrolyte solution containing fluorine ions, a platinum electrode as a counter electrode is subjected to anode oxidizing realution governance. A cleaned titanium sheet as an anode is placed into an electrolyte solution containing fluorine ions, a platinum electrode as a counter electrode is subjected to anode oxidizing reaction, the reacted electrolyte solution is subjected to ultrasonic dispersion during the whole anode oxidizing reaction, and the reactants are sintered after the anode oxidization is ended to obtain tction, the reacted electrolyte solution is subjected to ultrasonic dispersion during the whole anode oxidizing reaction, and the reactants are sintered after the anode oxidization is ended to obtain the short TiO2 nano-tube array film electrode. By using the obtained short TiO2 nano-tube array film electrode as a working electrode, Ag-AgCl as a reference electrode and Pt as the counter electrode,he short TiO2 nano-tube array film electrode. By using the obtained short TiO2 nano-tube array film electrode as a working electrode, Ag-AgCl as a reference electrode and Pt as the counter electrode,0.01 to 1 mole of sodium sulfate solution is added into organic pollutant solution, and then the organic pollutants can be degraded. By adopting the firm TiO2 nano-tube array film electrode with short0.01 to 1 mole of sodium sulfate solution is added into organic pollutant solution, and then the organic pollutants can be degraded. By adopting the firm TiO2 nano-tube array film electrode with shorter