The environmental factors influence the health status at individual and community level. This seems to be more important in tropical countries. This, in developing and specially in tropical countries, public health activities are more concerned with environmental factors. It is well known that in a community, mothers and children are more << at risk >>. Environmental factors influence child health status at different developmental stages. Several studies have proved the impact of mothers and community education on their health status. Thus mothers and adults education are important to improve child health. However, it became evident that a direct education of the child has also an impact. << Child to child programm >> is an active and participativ educational approach. This report is about child activities related to environmental factors. These activities are promoted by our Association involving health workers, teachers, social workers in Burkina-Faso (west Africa).