This article examines in detail the process of sensorimotor development in children, that is, the coordination of sensory (sensation, perception) and motor (movement) functions. The study is based on the fact that the formation of sensory and motor areas is linked to brain activity and environmental influences. Drawing on the ideas of scientists such as G.A. Uruntaeva, A.V. Zaporozhets, and V.V. Tonkova-Yampolskaya, the stages of child development are described – functional changes from infancy to preschool age. Psychomotor development, pre-speech activity, the importance of auditory and visual analyzers, the emotional sphere, the development of fine motor skills and hand movements are examined in detail. Important stages of child development, age-related characteristics of fine motor skills and visual-motor coordination, as well as their impact on speech and cognitive activity are analyzed in detail. The conclusion emphasizes that normal sensorimotor development is the foundation for a child's overall mental and intellectual development.