Introduction: The main purpose of the present work was to identify positive and negative aspects of using mass media, and the specific objective is to examine their impact on the lifestyle of children in grades 4-6 in primary schools in Biała Podlaska. Research methods and techniques: The study was conducted in February 2017 at Społeczna Szkoła Podstawowa (Community Primary School) and Szkoła Podstawowa nr 5 (Primary School No.5) in Biała Podlaska. 100 students participated in the study, the applied research method was the method of a diagnostic survey using surveys and questionnaire forms designed by the author. Queries included in the questionnaire concerned the amount of time devoted daily by students to the use of various mass media and their impact on the children’s lifestyle. Statistical calculations were made in the PQStat software. Results: The study group was characterized with the participation of 100 students divided into groups based on the grade they were in, their sex, place of residence, amount of time spent using media Conclusions: – In the examined group of students, it may be concluded that mass media influence their lifestyle. – The examined children most often have contact with the media via a mobile phone, the Internet, television and a computer. – According to the respondents, school, friends, the Internet and television have the biggest influence on the shaping of behaviours and upbringing of pupils.