On account of the current situation of total deterioration in the children’s health in Ukraine, a special focus is to be paid to the issues related to the children who suffer from the disorders of the musculoskeletal system, where the verticalisation of the child plays an important role. The priority in the formation of the orthograde position of a person, adoption of a vertical posture and movement in it is the formation and development of support reactions during infancy and a young age. Numerous studies in the field of the formation of the support reaction, the formation and development of support capacity was mainly given to lower limbs (M. Bezrukih, V. Beseda, M. Bocharov, V. Dubrovsky, N. Efimenko, V. Mitskevich, G. Popov, N. Finney). Herewith the ontogenetic data were insufficiently represented, and the studies of support reactions of various parts of the body were rather meager, which determined the direction of our study. The purpose of this article was to identify key points of the formation of the support ability of various parts of the child’s body in the process in an early ontogenesis. Research Objectives: 1. Analysis of literary sources on the problem of the formation and development of the support ability of children. 2. To identify the main blocks of the formation of the child's support in different age periods of an early ontogenesis. Research methods: a method of analyzing literary sources on a problem of formation of support ability in children; a method of generalization of obtained information regarding the development of support ability and its impact on motor status of the child; a method of classifying of periods of formation of support abilities of various parts of the body during an early ontogenesis. Analyzing the information received from above, it should be borne in mind that in ontogenesis, the formation of support ability occurs in various parts of the body depending on certain periods of the child’s life, which subsequently affects the development of his posture. This information can be used by specialists in the field of physical education to solve the problem of the formation of support ability of the children, especially in the infant period as well as in the correction of various motor disorders.