 Quantum dots, QDs, have been widely used in Li-S batteries due to their unique properties such as high surface area, strong polarity, and abundant lithophilic nucleation sites. These features allow them to effectively reduce the shuttling effect, enhance the kinetics of redox reactions, and control the lead deposition slash stripping process. This review provides an overview of the current research progress in using QDs in Li-S batteries, focusing on the strategies of composition optimization, defect and morphology engineering, design of hetero structures, and so forth. The prospects and challenges of QDs in Li-S batteries are also discussed. This article was authored by Zhu Sen Wang, Hanyun Che, Wenqiang Lu, and others.