Summary Mental health – it is mental and social wealth of person, that ensures proper physical, intellectual and emotional communication which doesn’t prevent the development of other people (Dictionary of Sport Terms, 2002). Mental health is defined by three fundamental components: sense of harmony, self-control, and stress level. Problem in question: Whether instruments of psychological influence are efficient to the development of students’ mental health while exercising? Hypothesis: we presume that instruments of psychological influence positively affect the students’, who play basketball, mental health. Object: Peculiarities of thirteen-year-old students’ who play basketball, mental health training using instruments of psychological influence. Goal of research: Identify the peculiarities of thirteen-year-old students’ who play basketball, mental health training using instruments of psychological influence. Tasks: Disclose the mental health of thirteen-year-old students, who play basketball, before the experiment and after its completion; evaluate the students’ sense of harmony before the experiment and after its completion; evaluate the level of students’ self-control before the experiment and after its completion; define the level of students’ stress before the experiment and after its completion. Results and findings: Results of mental health in control and experimental students’ groups statistically didn’t differ significantly (p>0.05) before experiment. Level of... [to full text]