Children's medical rights were actively developed in the twentieth century after the First World War. It was an event of a global scale that prompted legislative changes in national legislations, including Ukraine. Ukraine's experience in children's health care is rich in examples of both successful reforms in this field, and also not that successful ones. The development of children's medical rights in Ukraine had passed different stages of its development. The period from 1919 to the beginning of the 21st century was taken to resolve this issue. The choice of this historical period is justified by the presence of different stages of state and legal development of Ukraine, and, as a consequence, the development of children's medical rights. This is because the development of children's rights is inextricably linked with the development of state policy in the field of child protection. The aim of this research is to analyse the development of children’s medical rights on the example of Ukraine. To achieve this goal, international legal documents, legislation of Ukraine, and works of scholars from various countries were analysed. During the study of this issue, a variety of scientific methods were used. Among them are the dialectical, historical method, method of analysis and synthesis, method of analogy and method of interpretation of legal norms. The main results obtained are: analysis of the history of the development of children’s medical rights in Ukraine and influence of the World Health Organisation and the Convention on the Rights of the Child (1989) on this development. The value of this paper lies in obtaining practical recommendations regarding children’s rights in general and the medical rights of children in particular