From the historical-diachronic aspect folklore in all stages of its development is functionalized on the base of universal development regularities of culture which is taken as an activity metasystem of universe. In this meaning from the sociological aspect between the functions of culture and the functional structure folklore there is a deep mutual relation and conditionality. In the article being culturological the functional structure of folklore is investigated from the main functions of culture which is standardized in science. In the article as a theoretical-