<p indent=0mm>Ionic liquid is a low-temperature molten salt composed of organic cation and inorganic/organic anion, which has the characteristics of molecular solvent and salt. It can be used as a reaction medium in chemical reactions, and also plays a catalytic or co-catalytic role. In this paper, the research progress of our group in recent years including ionic liquid-mediated transformation of renewable carbon resources, ionic liquid-catalyzed hydration of propargylic alcohols under metal-free conditions, and ionic liquid hydrogen bonding-catalyzed chemical reaction was summarized. The problems that still exist in this field were addressed and the development prospect was also presented.