A control system for controlling a plurality of robots using artificial intelligence includes a communication unit configured to receive user information of each of a plurality of unit zones in which the plurality of robots is disposed, and a processor configured to calculate a plurality of densities respectively corresponding to the plurality of unit zones based on the user information of each unit zone, calculate average densities of a plurality of group zones using the plurality of calculated densities, determine respective priorities of the plurality of group zones based on the calculated average densities, and control movement of one or more of the plurality of robots based on the determined priorities.