The aim of the article is the study of the socio-cultural and linguistic trends in the formation of the national language personality in the light of intercultural communication, as well as the characteristic features of the bilingual's language picture of the world. The authors used linguistic, cultural and cognitive methods to identify mental and linguistic processes in the language consciousness in bilingual communication in each language and in the process of interaction of languages, whose carrier is a bilingual person. In the multicultural space of communication intellectual activity of the bilingual is influenced by a number of factors - the social status of languages spoken by the individual, the level of proficiency in each language and language application. The article reveals socio-cultural and cognitive features of interaction of language pictures of the world of the bilingual language personality, describes the forms of inter-language interaction in the speech and intellectual activity in the conditions of natural and artificial bilingualism. If in the Russian society natural bilingualism has a long history and functions as a usual communicative environment for many people, artificial bilingualism for the subject is associated more with the predominant role of the native national picture of the world than with the picture of the world of the people being a carrier of the target language. The most frequent linguistic and cognitive processes in bilingual speech are a superposition of the two national language pictures of the world, transition from one cultural code to another, interference phenomena and intercalation. © Serials Publications.