Participatory territorial diagnosis (PTD) has become a privileged policy for the implementation of development actions. In this context, this article focuses on the impact of this strategy in rural development programs. This method carried out at the Magroune locality (Department of Naâma) aims to elaborate, according to a participative and partnership approach, an integrated development plan that reconciles socio-economic needs with the environmental and territorial needs of the rural locality in question. Field prospection and surveys with the local population made it possible to identify the problems affecting the locality and to propose suitable solutions through the construction of a problem and solution tree. The results show that isolation, insufficient drinking water, electrification, and silting up are the main problems that need to be solicited by local development actors.