Harmful algal blooms (HABs) have several negative impacts on aquatic ecosystem, and even harm to humans. Utilization of allelochemicals to inhibit microalgal overgrowth is an environment-friendly approach for controlling HABs. This paper demonstrated the development of allelochemicals with algicidal effects, including the development history of allelopathy, the application methods, the reported allelopathic plants and their derived allelochemicals. Allelopathy is a promising strategy to control HABs as the effectiveness of allelochemicals on inhibiting microalgae cells has been discovered and confirmed for many years. The proposed allelopathic mechanisms and species-selective properties were expounded as well. Moreover, this paper further proposed suggestions for the further research and development of allelopathy strategy for HABs control.

有害藻华（HABs）对水生生态系统有若干负面影响，甚至对人类有害。利用化感物质抑制微藻过度生长是控制HAB的环保方法。本文阐述了具有杀藻作用的化感化学物质的发展，包括化感作用的发展历史，应用方法，报道的化感植物及其衍生化感化学物质。化感病是控制HAB的一种有前途的策略，因为已经发现并证实了化感化学物质抑制微藻细胞的有效性。还阐述了拟议的化感机制和物种选择特性。此外，本文还为进一步研究和发展用于控制HABs的化感作用策略提出了建议。