Modern science is actively studying developmental disorders in preschool children with mental retardation. Many mechanisms for the formation of mental retardation in preschoolers have been elucidated. It is recognized that the preschool age is most favorable for the successful correction of the development of such children. Considering that the general development is directly related to the level of speech formation and the mental activity, it was decided to evaluate the corrective possibilities of logorhythmics in children with mental retardation. To assess the developmental characteristics of such children, a set of complementary research methods was applied in dynamics. It includes: the “House” method, the method of studying the sound-absorbing side of speech, the method of studying attention “Find the difference”, the method of studying thinking “Understanding pictures with hidden meaning”, the method of researching the level of vocabulary development and general awareness “Show and tell”. The author’s logorithmic correctional program showed its advantages in comparison with the traditional correction in relation to the development of personal, intellectual and speech development in children with mental retardation. This was confirmed during the comparison of the results of correction in the experimental and control groups, which proved that logopedic rhythmics is the preferred means of enhancing development in preschool children with mental retardation.