The IoT interlocking control solution based on cellular wide area network & Bluetooth utilizes cellular wide area network + Bluetooth networking, and uses an asymmetric encryption algorithm to create an extremely secure networking solution to establish a safe, stable, easy-to-use and powerful management mode. Cellular wide area network lock control can be controlled without a gateway. It can be integrated or expanded with communication monitoring modules such as NBIOT, CAT1, GPRS, 4G, etc., and can be used for lock control applications in scenarios such as outdoor cabinets, machine rooms and stations, and underground equipment monitoring.