France Prešeren is considered the greatest Slovene poet and his poetry is the topic of many literary and linguistic discussions. This thesis considers Prešeren’s Poezije from the perspective of the occurrence of phraseological units in the entire collection of poems. In the first part the characteristics of a phrasemes as a linguistic unit are presented. Next is the list of phrasemes in Poezije, which are divided into multi-word and sentential phrasemes. Multi-word phrasemes are divided into four time periods of Prešeren’s poetic work. The middle part of the thesis is the analysis of the phraseological renewals. The phraseological renewals are intentional, unique and context-affected changes of the original phraseme on the level of its form or meaning. In the last part Prešeren’s conceptual metaphor LOVE IS FIRE is presented, common unfixed phrases are listed. Phraseology that developed on the basis of the usage in Prešeren's poems is presented. Poems that are especially interesting from a phraseological perspective are also analyzed. At the end there is an analysis of the usage of phraseology in individual poems according to the period of Prešeren’s poetry creation.