A parking management system is provided. The system includes a plurality of first parking management apparatuses configured to detect whether parking spaces are occupied and to adjust a brightness level of lights based on occupancy information of the parking spaces. The system also includes at least one second parking management apparatus configured to detect whether a vehicle passes through one of an entrance and an exit of a parking facility and perform corresponding operations based on a detection result. Further, the system includes a server, where the first parking management apparatuses are cascaded through a first Bluetooth module. The first parking management apparatus is connected to a wireless module of the second parking management apparatus through the first Bluetooth module; the second parking management apparatus communicates with the server through the wireless module; and the plurality of first parking management apparatuses communicate with the server through the second parking management apparatus.