A dynamic management system of the maintenance of a geographic location during a mass gathering, said geographic location comprising a plurality of installations, said system being capable of communicating with a plurality of maintenance resources involved in the maintenance of the geographic location, said system comprising an analytical platform comprising: - an acquisition module of distribution data able to: ▪ calculate a distribution datum of participants at said gathering referring to a movement of people, corresponding to an entry and an exit number of said geographic location or of a part of said geographic location, from first distribution data of participants referring to a number of people generated from data from image acquisition devices and data from network sensors, and ▪ record a distribution datum of participants at said gathering referring to a movement of people, - a calculation module of needs able to determine the installations requiring maintenance action from the distribution datum, - a maintenance resource management module configured to generate an item of information, preferably in real time, on the distribution of maintenance resources, - a resources distribution module configured to set up associations between the maintenance resources and the installations requiring maintenance action so as to manage the maintenance of the geographic location during said mass gathering, and - an analysis module configured to generate analysed data from said associations so as to allow dynamic maintenance management of the geographic location. - an acquisition module of distribution data able to: ▪ calculate a distribution datum of participants at said gathering referring to a movement of people, corresponding to an entry and an exit number of said geographic location or of a part of said geographic location, from first distribution data of participants referring to a number of people generated from data from image acquisition devices and data from network sensors, and ▪ record a distribution datum of participants at said gathering referring to a movement of people, ▪ calculate a distribution datum of participants at said gathering referring to a movement of people, corresponding to an entry and an exit number of said geographic location or of a part of said geographic location, from first distribution data of participants referring to a number of people generated from data from image acquisition devices and data from network sensors, and ▪ record a distribution datum of participants at said gathering referring to a movement of people, - a calculation module of needs able to determine the installations requiring maintenance action from the distribution datum, - a maintenance resource management module configured to generate an item of information, preferably in real time, on the distribution of maintenance resources, - a resources distribution module configured to set up associations between the maintenance resources and the installations requiring maintenance action so as to manage the maintenance of the geographic location during said mass gathering, and - an analysis module configured to generate analysed data from said associations so as to allow dynamic maintenance management of the geographic location.