The invention discloses a novel lock control system based on the internet of things technology. The system comprises an intelligent lock, an intelligent lock control APP of a mobile phone end, an intelligent key and a back-stage management module; the intelligent key comprises a key body, a controller, a micro processor, a micro motor and a mobile communication card, wherein the controller, the micro processor, the micro motor and the mobile communication card are arranged in the key body, unique micro motor drive sequence codes are given to the intelligent key through the back-stage management module, the intelligent lock control APP of the mobile phone end can receive the micro motor drive sequence codes and send the micro motor drive sequence codes to the controller, the controller achieves unlocking of the intelligent lock in a manner that the micro processor drives the micro motor, and the micro processor uploads intelligent lock unlocking time to the back-stage management module.The intelligent key and development software are used in a matched manner, all locks of a transformer substation are subject to unified control management, and the management level of an unattended transformer can be improved.