This review discusses recent observations regarding the mechanism of archaea transport and their relevance to studies of membrane structure. The review primarily deals with some aspects of several mechanisms by which substances are assumed to cross cell membrane in archaea. Since a number of these observations are interesting from the evolutionary point of view, they will provide guides for future studies of evolutionary aspects of the transporting mechanisms. Hopefully, the genetic and molecular biology approach, combined with biochemical and new physical techniques will extend the study of membrane transport of archaea to the molecular level.