A seriesSof TiO₂ nanotube array thin films were prepared by anodic oxidation pure titanium foils under different anodization voltages and anodization times in ethylene glycol electrolyte. The surface and fracture morphology of TiO₂ nanotube samples were characterized by FESEM, which was used to investigate the influence of anodization voltage and anodization time on the growth rate of TiO₂ nanotubes. Photoelectrochemical properties of the TiO₂ nanotubes were measured by electrochemical method. The photocatalytic activity of TiO₂ nanotubes was evaluated by hydrogen production in the two-compartment photoelectrochemical cell without any external applied voltage. The results indicated that comparing to prolonging anodization time, increasing anodization voltage was more effective to obtain TiO₂ nanotube arrays withShigh aspect ratio. Consequently, the photocurrent response, photoconversion efficiency and hydrogen production of TiO₂ nanotube arrays were improved remarkably.