Abstract:The life space of populations is materialized by the habitat. This habitat spreads with the population increase. In the urban area, the transformation of the habitat is sometimes accompanied by problems like, segregation, risks.., raising the problem of the zone planning. The case of fire risk in the city of Yaounde is mentioned here and calls for an analysis, in a context that clarifies on decision making for problems of zone planning.The strategy of approach here is to determine steps of phenomenon analysis, to describe the fire risk in its evolution while unveiling the derived information, which can characterize the urban area; an application is made to the city of Yaounde.At the end of this survey, the elements of definition and characterisation of the fire risk in urban area follow by characteristics of the city zones of Yaounde, taking account fire risk and measures to remedy them have been done.