The research explores the modalities and objectives of the humanitarian response to the crisis of the displaced in Bangui, in an environment of national crisis that calls for intervention elsewhere. It highlights the actors and their relationships, in a more sectoral than transversal work. The humanitarian response has not been able to adapt to the evolution of the crisis which, initially humanitarian with an urban component, has become urban with a humanitarian component in Bangui. The goodwill of everyone is evident, but the complexity of the urban issue and the central African context disarms humanitarian actors organized in a system perceived as dedicated to the beneficiary. For its part, the government is part of the response through its humanitarian action leaders and its difficulties in managing urban development, the informal part of which is not recognised.