The implementation of the rural revitalization strategy is a major deployment strategy made by the Party Central Committee on the “agriculture-rural areas-peasants” work. As a special industrial form, rural tourism fully conforms to the general standards of the rural revitalization strategy in terms of economy, society, culture, ecology, and other key aspects. Therefore, it is an important driving force and an effective way to solve the “agriculture-rural areas-peasants” problems and to realize the rural revitalization strategy. This study combines the rural revitalization of ethnic villages and rural tourism in former deep poverty areas, and explores the coupling and coordination between rural tourism and rural revitalization. On the basis of consulting the relevant literature and through qualitative and quantitative research methods, an evaluation index system for the coupling and coordination of rural tourism and rural revitalization in ethnic villages in previously deep poverty areas was constructed. Taking Didigu Village in Ebian Yi Autonomous County as a research case, this study analyzed the comprehensive development level, coupling degree and coupling coordination of its rural tourism and rural revitalization system, then selected the factors and indicators which affect the coordinated development of the coupling of rural tourism and rural revitalization in ethnic villages in order to discuss the leading factors which restrict regional development, and finally put forward targeted optimization countermeasures and suggestions. The results show that rural tourism plays a significant role in guiding rural revitalization, and the interaction between rural tourism and rural revitalization is increasingly enhanced, with large room for future growth. For the former deep poverty minority village, the government's policies, funds, talents and technologies for rural revitalization and rural tourism development play an important role in their coupled development. In order to further improve the coupling degree of rural revitalization and rural tourism, one suggestion is that the government should firmly exercise a top-level design function to improve the quality and efficiency of rural revitalization in order to accelerate the revitalization of rural culture and to drive the improvement of rural tourism quality, thus improving the quality of rural tourism and promoting the revitalization of rural areas.