Abstract: TiO₂ photocatalyst has attracted much attention due to its non-toxicity, high stability, strong redox ability, and low cost. However, its wide E_g can only be excited by UV light, serious photogenerated carrier recombination and other limitations limit the application of TiO₂ photocatalyst. In recent years, researchers have carried out a lot of research on the above problems to improve their visible light response, reduce carrier recombination, and then improve the photocatalytic hydrogen production rate. In this paper, the research progress of TiO₂ photocatalyst modification and its photocatalytic hydrogen production is reviewed, and its future development trend is prospected.