Abstract: The polar regions of the Earth serve as essential transit zones for polar-orbiting satellites and Arctic shipping lanes. This unique geographical significance has elevated ionospheric scintillation research in these regions to a prominent focus within the realms of space physics and radio applications. As human activities in the polar regions continue to expand, the need for comprehensive monitoring of ionospheric scintillation has become more urgent than ever. This paper provides a concise overview of the advancements in polar ionospheric scintillation research over the recent years. The primary content includes the following aspects: introducing the fundamental definition of ionospheric scintillation; consolidating the methodologies for calculating ionospheric scintillation indices and evaluating their suitability for the polar regions; delineating the statistical characteristics of scintillation phenomena induced by ionospheric irregularities in the polar regions, along with their associated dependencies; and exploring the foundational principles and principal models utilized in polar ionospheric scintillation modeling.