This article devoted the problem of linguistic cross-language interference, affecting all levels of the language system in the process of learning Russian as a foreign language to Persian-speaking students at the elementary level (level A1-A2). In the article, the author attempts to systematize and describe the frequency phonetic, grammatical and lexical violations that occur on the basis of the interference under the influence of the system of native language learners. The material for the work served card indexes of the frequency of violations at the sentence level, recorded by the author in writing and speaking Persian speaking students-philologists of the beginning stages of training.
