The invention relates to the field of monitoring systems, in particular to a digital city management system. The system fully utilizes the existing network resources, public security and city management video monitoring resources, and the like to establish a unified digital city management platform, thereby obtaining an integrated management platform capable of integrating geocoding, video monitoring and GPS positioning into a whole and integrating inspection, treatment and supervision into a whole. Thus, hardware, software, geocoding, population information, house information, operating main body information and the like are centrally constructed on the city-level platform, and the street (village and town) secondary control center, relevant leaders and relevant departments are connected to the platform through the government intranet; and the secondary control center mainly constructs large monitoring screens, computer terminals, mobile phones for city management, installation or access of video monitor signals, vehicle-mounted GPS and the like according to the self demands.