Cholesteric liquid crystals (CLCs) exhibit distinctive optical properties due to their helical structure, making them valuable for various applications, from displays to sensors. The incorporation of quantum dots (QDs) as dopants into CLCs introduces new avenues for enhancing and expanding their functionality and performance. This chapter explores the effects of doping QDs into Cholesteric liquid crystal (CLC), highlighting how these QDs influence the optical, electro-optical, and dielectric properties of CLCs. In this chapter, the studies related to the processes used for the synthesis of QDs, and respective characterizations have also been discussed. The detailed review on the enhancement of CLC applications such as CdSe QDs in display devices for enhanced colour contrast and brightness, PbS QDs with size tunable photonic devices, Mn-doped ZnS QDs for biosensors, and CuInS2 QDs for smart windows etc. has been explored. These advancements in QDs doped CLCs have opened the great scope of CLCs from experimental research to their practical usage in next generation energy efficient devices.