There is a strong correlation between tourism and regional economic development. This paper uses the panel data of Yunnan province from 2009 to 2018 to analyse the coupling coordination between tourism and regional economy, first, the relationship between Yunnan tourism and regional economy is analyzed by correlation analysis. Second, the current situation and trend of coupling coordination between Tourism and regional economy in Yunnan from 2009 to 2018 are analyzed by using the coupling coordination model. The results of the study and analysis show that there is a high correlation between tourism in Yunnan and the regional economy. The comprehensive score of Tourism and the regional economy in Yunnan and the coupling degree between the two are very high, and both show an upward trend, and the coupling coordination degree gradually changes from the moderate imbalance state in 2009-2012 to the near imbalance state in 2018, indicating that the coordinated development of tourism and regional economy in Yunnan in recent years is promoting each other's development.