Bluetooth communication system bandwidth allocation method

The invention discloses a bandwidth allocation method for a Bluetooth communication system. The Bluetooth communication system comprises a plurality of master devices and a slave device, each master device establishes a Bluetooth link with the slave device, and the basic bandwidth of any Bluetooth link and the extended bandwidth of each Bluetooth link are determined according to the set communication interval time of any Bluetooth link and the maximum number of Bluetooth links which can be supported by the slave device; a Bluetooth link in a non-sniffing mode and a communication mode of common connection firstly communicates through a basic bandwidth, and if the communication is not successful, the bandwidth is expanded from short to long in sequence for communication. According to the communication mode and the working condition of the slave device in the Bluetooth communication system, the communication bandwidth of the Bluetooth link in the non-sniffing mode and the communication mode of the Bluetooth link