Lithium-sulfur (Li-S) batteries are regarded as potential alternatives to lithium-ion batteries due to their extremely high theoretical energy density.Nevertheless,Li-S batteries still suffer from low coulombic efficiency,low sulfur utilization,and poor cycling life,which hinder their further applications.To obtain ideal Li-S cells,intensive work has been dedicated to improve the conductivity of the electrode,inhibiting the shuttle of lithium polysulfides,and promoting the redox of sulfur.Two-dimensional transition metal carbides,nitrides or car-bonitrides,also known as MXenes,attracting significant research interest in Li-S batteries due to their high conductivity,abundant active sites,layered structure and adjustable surface chemistry.In this review,we sum-marize the partial etching methods of MXenes with different surface terminations,the role of MXenes in Li-S batteries and MXene-based composites designed for Li-S batteries based on interfacial chemistry and interlayer structure.In the end,we also propose the perspectives of MXenes for Li-S batteries.