Ionic liquids (ILs) have attracted intensive attention and have been used widely in many applications because of their diversified properties, which are caused by the special structure of the ILs. Ionic clusters are one of the typical structures that exist widely in the IL system. They are stable under certain conditions and change under other conditions. Ionic clusters are a typical mesoscale phenomenon in mesoscience. In this review, we summarize our recent progress related to ionic clusters, including the ionic-cluster structure, changing mechanisms, and their effect on the physicochemical properties. IL cluster investigation based on mesoscience is very important, will provide new insight into the structures and properties of ILs, and will boost further exploration of IL applications.

离子液体（IL）引起了广泛的关注，并且由于其多种多样的特性而引起了广泛的应用，这是由于离子液体的特殊结构引起的。离子簇是IL系统中广泛存在的典型结构之一。它们在某些条件下是稳定的，而在其他条件下会变化。离子簇是中观科学中的典型中尺度现象。在这篇综述中，我们总结了与离子簇有关的最新进展，包括离子簇结构，变化机理及其对物理化学性质的影响。基于中观科学的IL聚类研究非常重要，它将为IL的结构和性质提供新的见解，并将推动对IL应用的进一步探索。