The non-canonical Wnt/Ca2+ signaling cascade is less characterized than their canonical counterpart,the Wnt/β-catenin pathway.The non-canonical Wnt signaling pathways are diverse,defined as planer cell polarity pathway,Wnt-RAP1 signaling pathway,Wnt-Ror2 signaling pathway,Wnt-PKA pathway,Wnt-GSK3MT pathway,Wnt-aPKC pathway,Wnt-RYK pathway,Wnt-mTOR pathway,and Wnt/calcium signaling pathway.All these pathways exhibit a considerable degree of overlap between them.The Wnt/Ca2+ signaling pathway was deciphered as a crucial mediator in development.However,now there is substantial evidence that the signaling cascade is involved in many other molecular phenomena.Many aspects of Wnt/Ca2+ pathway are yet enigmatic.This review will give a brief overview of the fundamental and evolving concepts of the Wnt/Ca2+ signaling pathway.