With the increasing demand for largeâscale energy storage devices, lithiumâsulfur (LiâS) batteries have emerged as a promising candidate because of their ultrahigh energy density (2600 Wh Kgâ1) and the costâeffectiveness of sulfur cathodes. However, the notorious shuttle effect derived from lithium polysulfide species (LiPSs) hampers their practical application, especially at low temperature. Therefore, electrolytes with low viscosity and high conductivity are required with the advancement of nextâgeneration LiâS batteries. Understanding the interface structure dependent solvent electrochemistry and recognizing the existing issues relating to electrolytes are indispensable prerequisites. This review briefly summarizes the challenges to further develop the new generation of LiâS batteries, which can operate steadily at subzero temperature, including LiPSs accumulation, Li2S nucleation, lithium deposition, and so on. On the basis of the crucial role of electrolytes in solving these questions, we outline the corresponding electrolyte design strategies from the different mechanisms (solidâliquidâsolid conversion, allâsolidâphase conversion, and allâliquidâphase conversion) such as lithium salt modification, additive introduction, and introduction of strong cationic electrolytes, as well as the application of solidâstate electrolytes, and so on. Finally, we emphasize promising strategies and solutions to improve lowâtemperature performance, pointing the way for the future development of maximizing extremeâtemperature electrolytes toward practical applications.