Abstract: The adjustment and optimization of industrial structure is an effective way to promote economic development and to improve the competitiveness of the industry. Non-wood forest products (NWFPs) industry plays an important role in the development of forestry in Sanming City. The analysis of internal relevance of NWFPs'industrial structure can serve as the foundation of adjustment and optimization of NWFPs爷industrial structure. Since grey system theory has unique advantages in modeling and analyzing systems with short time series, few statistic data and incomplete information, this paper uses it to make a grey correlation analysis of NWFPs爷industrial structure and a prediction of the future development of NWFPs industry in Sanming City.