The article is devoted to popularization of the Russian language and culture in Vietnam, in the context of epidemiological restrictions, through carrying out online linguistic and cultural summer schools. The purpose and idea of creating short-term Russian language courses and summer schools is the organization of a language developing sociocultural and living space for Vietnamese students during the summer holidays, the formation of students' ideas about the diversity and artistic originality of the peoples’ culture, instilling motivation to study the Russian language and desire to study at Russian universities. In the past 3 years, the Covid-19 epidemic has been spreading around the world. Under the conditions of forced restrictions due to the epidemiological situation, online linguistic and cultural summer schools have appeared as a factor of additional personal motivation of students. Linguistic and cultural summer schools include a set of activities aimed at supporting the linguistic and cultural needs of foreign students, getting to know the culture and history of Russia, and creating a positive image of the Russian Federation and Russian education.