Made an in-depth study of Hainan's tourism industry from the two aspects of Industry Association and development efficiency, and used the grey correlation analysis method to calculate and rank the correlation between industries. It was found that Hainan's tourism industry was generally highly correlated with agriculture, industry, construction industry, wholesale and retail industry, accommodation and catering industry, transportation industry, etc. At the same time, based on the Solow residual method to calculate its total factor productivity, it was found that in the process of tourism development in Hainan Province, it mainly depended on the pulling effect brought by capital investment, followed by the contribution rate of technological progress, and the lowest was the contribution rate of labor force. Finally, according to the research results, some suggestions were put forward.