Using titanium dioxide（TiO2） to enhance the performance of wood-based composites is increasingly visible in China.This paper introduced the primary theory and characteristics of photocatalytic activity of TiO2 and also reviewed worldwide research efforts of the application of TiO2 in the wood industry.Summaries and discussions are presented about the advantages and future research needs to develop potential prospects that TiO2 may have to improve wood-based composites such as multifunctional,environmentally-friendly,anti-ultraviolet,and reinforced materials.