WO₃ nano-rods were synthesized on the FTO substrate by hydrothermal method. Pt nanoparticles with different deposition time（40 s， 80 s， 120 s） was loaded onto WO₃ nano-rods by an electrodeposition method to prepare WO₃/Pt composite film photoanodes. Characterization of samples was conducted by scanning electron microscopy and X-ray diffraction， the results show that the WO₃/Pt composite films have been synthesized. Diffuse reflectance spectra show that the WO₃/Pt composite film has more strong absorption than pure WO₃ nano-rods film. Electrochemical impedance spectroscopy shows that the WO₃/Pt composite film enhances a charge transfer efficiency compared with pure WO₃ nano-rods film. The photoelectric properties of the samples were obtained from the photocurrent and the photoelectric catalysis. The WO₃/Pt composite film samples have higher photocurrent and photoelectric catalytic （PEC） activity than pure WO₃， and the sample obtained by depositing for Pt nanoparticles at 80 s （WO₃/Pt-80 s） has the highest photocurrent and photoelectric photoelectric catalytic activity. Meanwhile， the photoelectric catalytic activity of WO₃/Pt-80s composite film is higher than direct photocatalysis or electric catalysis of WO₃/Pt-80s composite film.