The fluoride accumulating abnormality of Antarctic krill is a unique and interesting physiological trait, and its mechanism has drawn more and more attention. Advances in the researches of fluoride accumulating mechanism of Antarctic krill were reviewed in this paper, including the source of fluoride, the distribution characteristics, chemical speciation, and the analysis of variations of fluoride in Krill, and the speculation of accumulation patterns. The prospects of research trends in future were also discussed.