The full development of primary school students in accordance with their age and psychophysiological characteristics involves their involvement in the principles of a healthy lifestyle. This requires the development of sound and well-founded knowledge on how to preserve and promote health. The purpose of the work is to establish the level of informed primary school students about the means and methods of maintaining good health. The study involved 147 students of primary school age in secondary schools. Kyiv. Among the research methods are questionnaires and statistical analysis of personal data. Results. It was found that the vast majority of younger students (p <0.05) have an idea of the role of physical culture in maintaining and promoting health and have knowledge of the necessary equipment for exercise. However, in general, younger students did not determine which well- being is optimal for independent exercise. Thus, 31.29% of respondents said they did not know the answer, 11.56% believe that classes on the background of fatigue can "relieve fatigue", and 4.08 and 3.04% of children think that classes on the background of illness or illness conditions, respectively, can overcome the disease. Unfortunately, the lack of awareness of primary school students in the issues of safe behavior while bathing was stated. Also among the respondents is the share of children with misconceptions about breathing while walking and running, about eating before exercise and drinking during exercise. At the same time, younger students have a vague idea of the criteria by which they can control their body condition, methods of hardening, and are not guided by the question of what is the optimal duration of morning hygienic exercises and daily walks in the fresh air. Therefore, there is a need to organize additional activities aimed at expanding the health-preserving knowledge of primary school students both in educational institutions and abroad.