The invention relates to the field of electric energy meters, and discloses a multi-master multi-slave transparent transmission system of a BLE Bluetooth electric energy meter. The system comprises master-slave BLE Bluetooth pairing, standard protocol data inspection, working mode selection and communication system performance verification. According to the invention, the problem that layout and wiring need to be considered on site during construction of a traditional electric energy meter is solved, the BLE adopts an asymmetric encryption technology, data transmission has better safety, the BLE adopts radio communication, the problem that data transmission needs to be aligned does not exist, and when a large amount of data is collected, the correctness of data transmission can also be guaranteed, the transmission distance is relatively long, multiple paths of data can be verified at the same time, transparent transmission and sharing of the data can be realized, the state of each node can be mastered in real time, the equipment replacement is more flexible, and the electric energy meter can discover the abnormity of the terminal equipment in time and report the state of the intelligent terminal equipment in time; the equipment is convenient to replace in time, the safety of data communication is guaranteed, and the data communication of the equipment can be recovered in time.