Tourism industry plays an obvious role in the adjustment of local economic structure and the improvement of economic income. When the county tourism economy maintains a good state of development, it can significantly promote the development of county economy and the increase of local residents' income. Therefore, exploring the influencing factors of county economic tourism income has a positive impact on promoting tourism income and improving tourism industry. This paper investigates the tourism income of Tonglu County, Z province, analyzes the composition and influencing factors of the local tourism income, discusses the relationship between the number of tourists and the tourism income, and works out a scientific and reasonable income promotion strategy on this basis.