〗According to the 1998-2017 timeseries data, this paper constructs two order differential vector autoregressive model and empirically analyzes the relationship between China’s six tourism related industries and economic growth from the perspective of tourism related industries. The research finds that there is a longterm cointegrated relationship between the development of air transportations, wholesale and retail, catering and the economic growth, that there is a oneway causal relationship between GDP and railway transportation, catering, and between employment and aviation, accommodation, wholesale, and retail, and that overall economic growth has direct or indirect effects on the development of some tourismrelated industries. The result of VAR model shows that economic growth is affected by tourismrelated industries to varying degrees, especially air transportations and accommodation, and that some tourismrelated industries have oneway causality, which affects each other in the long run.