[目的]为揭示外来植物入侵机制的本质。[方法]本文以物种生态位与环境物质能量流为基本研究参量,分析外来植物入侵的内在机制。[结果]认为通常情况下外来入侵植物缺乏明确的定义标准和有效防治方法。[结论]外来入侵植物的泛滥取决于该物种生态位在空间上是否获得连续的满足,以此为基础提出了相应的防治措施,对构建“柱网模型”提出设想,并对外来入侵植物概念本身提出讨论。 [Objective] To reveal the nature of invasion mechanism of alien plants. [Method] Taking the species niche and energy flow of environmental material as the basic research parameters, the intrinsic mechanism of invasive plant was analyzed. [Result] It is considered that the alien invasive plants usually lack of clear definition standard and effective control methods. [Conclusion] The flooding of alien invasive plants depended on whether the niche of the species attained continuous satisfaction spatially. Based on this, the corresponding control measures were put forward, and the idea of ​​constructing “net model” was put forward. The plant concept itself is discussed.