This paper takes the Pudacuo Tourism Branch as the case study object. Based on ESG theory and symbiosis theory, this paper uses the case study to explore the process and mechanism of ESG behaviour of tourism enterprises to promote the evolution of community - enterprise relationships and promote the cooperation of community - enterprise. The findings are as follows: the collaboration barriers of community - enterprise in ethnic areas are mainly reflected in two dimensions: asymmetric information and benefit distribution problem, and the two dimensions show dynamic changes; through ESG behaviours, tourism enterprises continue to narrow the psychological distance of social enterprises, strengthen environmental protection, promote the community from passive “ blood transfusion” style of life to active “ hematopoietic ” style of development, promote the continuous integration and strengthening of environmental protection from ecological restoration to ecological protection and ecological education; with the continuous development of enterprises' ESG behaviors, the behavioral effect achieved is gradually manifested as “ goodwill transmission - trust construction - co - governance and sharing” , which promotes the symbiotic relationship between enterprises and communities from asymmetrical mutualistic intermittent symbiosis to asymmetrical mutualistic continuous symbiosis, and finally into the symmetrical mutualistic continuous symbiosis.