Background and aim: The present study seeks to study the areas that define the right of the child to health in Iran and the expression of what and how this right. Method: this regard, with qualitative approach and thematic research method, content analysis and content analysis interviewed experts and identified four key determinants of children's right to health in Iran. then four areas, including Iranian laws and regulations, the Convention on the Rights of the Child, the Islamic Religion, the Convention on the Rights of the Child in Islam, referring to their main sources he has analyzed the content. Ethical Considerations: In the present study, interviewing experts, covert and behavioral tips of the interviewee, anonymity of interviewees and their consent to interview and record their speeches were observed. In the process of document and information analysis, reference to authentic sources as the most important ethical principles of content based research was observed. Conclusion: The results show that, in each of the four areas studied, different aspects of child health, including child health during pregnancy and mother, child nutrition, child health and care, protection of children with congenital problems, they have introduced insurance and social security. But the status of the right of the child to health in Islamic religion and its compliance with the laws and regulations of Iran and the Covenant on the Rights of the Child in Islam take into account previous generations, potential parents, the mother's pregnancy and the child's birth. This goes back to the definition of a child in each of the four areas. In Islam, childbearing is considered a priority, and the importance of protecting it based on religious principles goes back to previous generations in a way that everyone is responsible for upholding the rights, including the right to health, of potential future children. But in the Convention on the Rights of the Child, the definition of a child is more dependent upon birth.