The article is devoted to the problem of lexical interference in teaching translation to linguistic students. With the development of the translation training, the interest in identifying and preventing problems associated with translation has also increased. Nowadays, a comprehensive consideration of these problems is traditional in courses of theory and practice of various types of translation. Since no one is immune from translation errors caused by interference, i.e. the influence of the first language system on the second one, there was a need to study this phenomenon when teaching professional translation in more detail.