The green development of tea industry in mountain area is an important part of rural industrial revitalization. The development and operation of traditional mountain tea gardens in the southern China is facing various challenges in soil erosion control, tea garden ecological conservation, diversified function mining and deepening green production. How to seek green development of the mountain tea industry in the light of local conditions and how to promote the transformation and upgrading of tea garden in the mountain area are the questions that must be addressed. In this article, combined with the actual development of mountain tea gardens in Fujian province, the ideas and technical countermeasures for the construction of the "three-life" coupling tea garden and green development system in mountainous areas are put forward through field research and scientific analysis, including strengthening the ecological restoration efficiency of tea gardens, the high-yield production efficiency of mountain tea gardens, the functions of the tea gardens and the coupling of the "Sansheng" elements in the mountain tea gardens so as to realize effective production-ecological-life functions and develop a new road for recycling agricultural economy in mountainous tea gardens. It also provides a reference for the implementation of the Rural Revitalization Strategy and the increase of farmers' income.