The results of experimental study of preschoolers' (6-years-olds) sets concerning smoking are presented. The analysis of cognitive, emotional and behavioural components of the set shows informative preparedness for trying and contradictory emotional-evaluative attitude to smoking, and some activity in personal smoking experience acquisition. The data show that even senior preschoolers have access to smoking tradition of the society. Practically the existence of formed set means that preventive measures must be aimed at set's reconstruction and not at its staving off.