Abstract: The development situation of the wood-plastic composites(WPC) was introduced. The light degradation mechanism of WPC was discussed. In order to ensure the light stability of WPC, the nature and properties of both the wood and plastics must be considered. The possible way for stabilization of WPC were also discussed, and the future development of WPC in China and the world were forecast.

Key words: wood-plastic composites, light degradation, light stabilization