Without doubt, early childhood has been considered the most important developmental phase in the whole lifecycle. It is a fundamental period in human constitution, skills, abilities and way of relating to the world. Important learning and maturation occur during childhood which allows one to interact, integrate and develop to the maximum as a person; healthy child development has been related to a reduction of problems such as obesity, sedentary behaviour and psychomotor development difficulties. Early childhood health promotion strategies are aimed at making a positive impact on boys' and girls' health, being adapted to local needs and possibilities, involving the active participation of fathers, mothers, caretakers, teachers and the community. This review (arising from work done at the end of the specialisation in food and nutrition in health promotion course) has been focused on investigating the evolution of the health promotion concept, health promotion experience and action during early childhood, the most important conceptual bases framing health promotion in this group of the population and the relationship between regulations aimed at guaranteeing children's rights and promoting health in the search for their integral development.