Background-Ecological poverty alleviation is China's key poverty alleviation measure in ecologically fragile mountain areas and poverty-stricken areas, and is an improvement in the comprehensive development of mountain areas. ⑵ Methods-By systematically combing the implementation effect, policy system and evolution of China's poverty alleviation policy, it is found that China's ecological poverty alleviation has formed a complete policy system including ecological industry, ecological migration, ecological compensation and ecological construction. (3) Results--China's ecological poverty alleviation has made remarkable achievements. By the end of 2020, China has established a pattern of ecological poverty alleviation with the central government as a whole, industry as the main driving force and local as the main implementation, and has fully completed the objectives and tasks of ecological poverty alleviation, helping more than 20 million poor people to get rid of poverty and increase income. Under the leadership of the Communist Party of China and the promotion of governments at all levels, China's ecological poverty alleviation has shown positive characteristics in terms of value orientation, target location and working mechanism. Each region has explored different ecological poverty alleviation models according to its own conditions. The practice and exploration of the national ecological poverty alleviation and sharing development demonstration area has achieved remarkable results. Anyuan model of "Internet + characteristic ecological industry poverty alleviation", Shangyou model of u ecological industry + ecological engineering poverty alleviation" and Suichuan model of "mechanism innovation + ecological value transformation" have emerged, and the ecological construction and maintenance of poor households has been constructed to increase income and carry out ecological restoration governance, realize the conversion of ecological value and promote the improvement of ecological quality. Ecological poverty alleviation has helped China eliminate absolute poverty, and regional overall poverty has been completely solved. After 2020, China has entered a period of comprehensively consolidating and expanding the achievements of poverty alleviation, and continuing to promote the development of poor areas and the comprehensive revitalization of rural areas. ⑷ Conclusions and Discussions--As China' s poverty-stricken areas that have been lifted out of poverty are highly overlapped with the distribution areas of ecological security barrier areas, ecological fragile areas, resource and environment sensitive areas and ecological protection and restoration projects, challenges and pressures are still existed in the process of consolidating and expanding the achievements of poverty alleviation, such as unbalanced economic and social development in poor areas, weak endogenous development momentum, weak infrastructure, and imperfect long-term mechanism. In order to consolidate and expand the achievements of ecological poverty alleviation, China needs to incorporate ecological poverty alleviation into the national medium and long term poverty alleviation and rural revitalization plan, improve the expansion mechanism of ecological poverty alleviation achievements, the realization mechanism of ecological product value, the coordination mechanism of ecological poverty alleviation and rural revitalization, and the co-construction and sharing mechanism of ecological poverty alleviation achievements. [ABSTRACT FROM AUTHOR]