Bluetooth local positioning navigation system and navigation method used in weak network hidden environment

The invention relates to a Bluetooth local positioning navigation system used in a weak network hidden environment, which comprises a mobile terminal, a processor and a plurality of Bluetooth beacons deployed on a path of a preset weak network hidden environment, the Bluetooth beacons are arranged at key path nodes of the path, and corresponding beacon information is stored on the Bluetooth beacons; the processor is used for acquiring a destination and a departure place of the mobile terminal and generating an optimal path according to the destination and departure place information; the mobile terminal is provided with a Bluetooth module used for being in communication connection with the Bluetooth beacon, and the mobile terminal is used for obtaining beacon information stored in the Bluetooth beacon and obtaining navigation road book information according to the beacon information for navigation. Compared with the prior art, the method has the advantages of navigation in a weak network hidden environment, g