As a new type of zero-dimensional carbon based nanomaterial,carbon quantum dots are considered as a green and efficient lubricating material due to their small size,good designability,excellent biocompatibility,good dispersion and stability,multiple synthesis methods and low cost.Many studies have also confirmed the excellent tribological properties of carbon quantum dots as lubricant additives.The research progress on the lubrication mechanism and functionalization of carbon quantum dots as lubrication additives was reviewed,and the application status of carbon quantum dots as lubricant additives in water-based lubricants,lubricating oils,greases and hydrogels was summarized.The prospects and research directions of carbon quantum dots as new lubricating additives were suggested.Making full use of molecular dynamics simulation technology to explore the lubrication mechanism of carbon quantum dots as lubrication additives,while strengthening research on the versatility of carbon quantum dots,and exploring the compatibility between carbon quantum dots and other additives are the focus of future research.