Ensemble averaging measurements obscure the link between the electrochemical performance and the specific properties of an individual because of the interplay of inhomogeneity and heterogeneity.Nanocollision electrochemistry has attracted increasing interest because of its extremely high sensitivity,revealing the intrinsic properties of individual entities that are masked in the traditional ensemble measurements.In this perspective review,we summarized the recent developments in nanocollision-based single entity electrochemistry and photoelectrochemistry,the combined nanocollision electrochemistry with the other complementary techniques,as well as accurate data process.In closing,future challenges,opportunities,and destinations related to nanocollison electrochemistry were discussed.