The CPC''s Twentieth National Congress report proposes that "promoting green and low-carbon economic and social development is key to quality development." Mountainous areas of Sichuan populated by ethnic minority groups are rich in natural and humanistic ecotourism resources; development of ecotourism industry and promotion of quality development is an important starting point for deepening the ecological civilization''s structural reform and implementing the strategy of "ecological region developed through tourism", and it is an inevitable choice for implementing the green and low-carbon plan to help achieve the policy ideal and goal of "carbon peaking and carbon neutrality"; it is also a sustainable impetus for effective eradication of poverty or return to poverty and for all-round implementation of the rural revitalization strategy. Based on analyses of the problems with developing ecotourism industry in ethnic areas of Sichuan, it is proposed that a sound policy support mechanism, a pluralistic interest-sharing mechanism, an optimized industrial integration development mechanism, an interdisciplinary talent cultivation mechanism, a multi-party coordination and supervision mechanism, and an innovative scientific and technological support mechanism should be developed.