A proximity network system includes a plurality of Bluetooth devices disposed respectively in each one of a plurality of electronic apparatuses. The Bluetooth devices are arranged for enabling the electronic apparatuses to receive and transmit Bluetooth wireless signals with each other. Each Bluetooth device includes a community relationship module, an identifying module and a distance detecting module. The community relationship module stores a community relationship data of each Bluetooth device. The identifying module reads the community relationship data of each Bluetooth device to identify whether each Bluetooth device has the same community relationship. The distance detecting module determines whether each Bluetooth device is in a proximity network. When the Bluetooth devices are identified to have the same community relationship with each other and are in the proximity network, each electronic apparatus is allowed to receive and transmit the Bluetooth wireless signals with another electronic apparatus.