In recent years, prevention of psychosis in people, who have early signs of its development, but do not fully meet the diagnostic criteria of mental disorder, has been an important issue of research in psychiatry. The article considers the approaches to the intervention in high-risk states of psychosis. At present, it can be considered obvious that early intervention in ultra-high-risk (UHR) individuals, most often consisting of cognitive-behavioral therapy and second generation antipsychotics, is safe, effective and cost-effective even in cases, in which psychosis develops because of the increase in the time before it occurs, reduction of the intensity of stress and improvement of outcomes by reducing the duration of untreated psychosis and lowering probability of hospitalization. Comparative studies of the first generation antipsychotics would be appreciated in UHR. The available data make it possible to state that not only the psychosis prevention should be the goal of interventions, but also trying to maintain personal and social functioning of people with UHR. The main purpose of interventions should be considered not to prevent psychosis, but to achieve more favorable outcomes.