A Bluetooth communication system includes a remote device, having a first Bluetooth module, and a user device, having a second Bluetooth module, and communicating with the remote device through the first Bluetooth module and the second Bluetooth module in a link state. When the remote device and the user device are over a communication range, the remote device enters an access state. In the access state, the first Bluetooth module re-communicates with the second Bluetooth module by a link back mode in a first time interval and a standby mode in a second time interval and when the remote device comes back with the communication range, the communication with the user device is recovered.