Primary and child node Bluetooth communication path determination method and Bluetooth communication system

The invention discloses a Bluetooth communication path determination method for master and child nodes and a Bluetooth communication system, in the Bluetooth communication system, when an initiator initiates communication to a target party for the first time, the initiator broadcasts first broadcast data containing unique identifiers of nodes of the initiator and a receiver; the Bluetooth node receiving the first broadcast data analyzes the first broadcast data to obtain unique node identifiers of the initiator and the target party; when the bit layer where the middle Bluetooth node is located is closer to the target party than the Bluetooth node broadcasting the first broadcast data, the middle Bluetooth node writes the unique node identifier of the middle Bluetooth node into the first broadcast data and broadcasts the first broadcast data, so that the first broadcast data is continuously updated and transmitted to the target party layer by layer according to the bit layer; and when the target party receives