The only textbook in the practice of higher education on speech therapy work with children in the first three years of life. The introduction presents domestic and foreign experience in implementing the program "Infant Habilitation." The first chapter analyzes in detail the standards of psychomotor and speech development of children in the first three years of life. The second chapter describes the author's methodology for diagnosing the pre-speech development of children with perinatal encephalopathy (AED) and cerebral palsy (cerebral palsy) in the first year of life. The levels of pre-speech development of children of the first year of life and children at risk are determined.