The ecological migration is the phenomenon of population flow due to the deterioration of the ecological environment and some people changing their living place. This paper combs the results of previous studies on the ecological migration theory and practice systematically, summarized the ecological immigration concept, forming factors, and resettlement mode.%生态移民是由于生态环境恶化而部分民众改换生活地点的人口流动现象。本文对前人对生态移民理论及实践的研究成果进行系统梳理，对生态移民概念界定、形成因素、安置模式等方面进行总结述评。
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