Abstract: In the article, the authors analyze the results of numerous studies in the field of perinatal psychology, indicating the importance of the prenatal period in the formation of the human psyche. Also, the authors of the publication, for the first time, substantiate arguments about the direct influence of factors acting on a child in the perinatal period of development on the entire subsequent dynamics of his mental and personal development. In particular, a hypothesis is argued about the existing connection between the unwillingness of having a child and antisocial behavior in adolescence. In the work, it is noted that the knowledge obtained as a result of research in the sphere of influence of the perinatal period on the formation of a person's personality is of practical use in that at the prenatal stage of life they provide an opportunity to determine psychosomatic disorders in an infant that can complicate his life, and, if necessary, take preventive measures aimed at improving the mental health of pregnant women. Also, there is every reason to support scientists in their assertion that the presented observations seem to be very important for criminological research. With serious arguments, the authors of the study note that among those convicted of murder and causing grievous bodily harm, there are many who are characterized by a state of tension, often close to paranoid. The findings of the researchers presented in the work give every reason to assert that the inappropriate behavior of the mother in the prenatal period, her emotional reactions to stress, which our life is saturated with, are the cause of not only a huge number of such postpartum conditions of the child as neuroses, anxiety, various allergies, mental retardation or other forms of pathology, but can also have criminologically significant consequences. This tension is often promoted by the commission of violent actions, that is, such states are one of the essential elements of the internal psychological mechanism of criminal behavior. The authors come to the conclusion that the study of the factors acting on the child during the perinatal period of development is a necessary prerequisite for understanding the reasons leading to the formation of deviant behavior in him in later life.