This research investigates the linguistic features of phraseological units in the Uzbek and Russian languages. The study analyzes their structural, semantic, and functional characteristics, focusing on similarities and differences in formation, imagery, and usage. Special attention is given to national-cultural elements reflected in idioms and set expressions of both languages. By comparing phraseological units across Uzbek and Russian, the research highlights how cultural background, historical development, and linguistic norms influence their meaning and stylistic value. The findings contribute to a deeper understanding of cross-linguistic phraseology and the role of phraseological units in intercultural communication.