Tourism industry, regional economy and ecological environment interact and promote each other, forming an open and complex complex system. Based on the coordinated development mechanism of tourism industry, regional economy and ecological environment, the system coupling coordination degree model is selected ,relevant data from 2011 to 2019 is collected, and an empirical analysis on the coordinated development of tourism industry, regional economy and ecological environment in Hebei Province is conducted. The results show that the coordination degree of tourism industry regional economy ecological environment coupling is on the rise, and the coupling coordination reaches a good level.The development level of tourism industry is slightly lower than that of regional economy. The slow improvement of ecological environment governance is the main factor restricting the coordinated development of the three.