The article is devoted to the problem of idioms associated with traditional rites and customs of Kashubian phraseology that has not been studied. Subject of the article is determined by originality and dissimilarity of Kashubian folklore material in the relevant materials of other Slavic languages. Kashubian phraseology related to folklore, is extremely rich in components that are relevant to the demonology, which significantly differentiates it from closely related to her Polish. The study allows us to conclude that the vast majority of phraseology includes free use of the words. The study of these units are extremely helpful in understanding the way in which the phenomena of national life are reflected in the phraseology.