Phraseological units are primarily stylistic possibilities of an artistic language.Without studying them, it is difficult to master the style and linguistic skills of a poet and writer. It isimpossible to give a picture of the development of a modern artistic language without studyingphraseological units, without deep penetration into them. In this regard, the national poets N.Rafibeyli and M. Dilbazi are important for studying the level of poetic language in the history of theAzerbaijani literary language in the XX century. A number of the main problems of phraseology(phraseological units and complex terms, verbal phraseological units and complex verbs,phraseological units and proverbs), the linguistic status of phraseology also remain controversialissues in linguistics today. Phraseology as a special branch of linguistics has not been established.