The Healthy Cities Project of World Health Organization is a reference that the actors competent to act on the living spaces of people can use to intervene strategically, globally, intersectoral, participatory and partnership for health populations. From the perspective of management and governance of territories, the thesis is in the process of post hoc analysis of the construction of local public health. From geographical point of view, one of the most interesting aspect of “Healthy Cities” is to see how the member cities seek to promote initiatives in places and specific spatial patterns and how these places and these initiatives contribute to local health and well-being.In defining health as "a state of complete physical, mental, social, well-being”, WHO has helped to disseminate a model of the determinants of health that attaches significant importance to factors related to physical and social environments. The Healthy Cities Program was launched in 1986 to recognize the role of actors in the urban development of cities likely to contribute to the vitality and Health for all. The goals of Healthy Cities were then reinforced, and rivaled or surpassed by the goals of sustainable development. Beyond the analysis of the terms of accession of each of the Breton towns involved in the network, the thesis seeks to assess the expansion of the inclusion of health in local priorities, with particular attention to the choices management and planning