The invention discloses a transformer substation device maintenance safety monitoring system and method. The system adopts non-contact human body induction and wireless transceiving signal technologies. When a person approaches a device which needs to be monitored, the system carries out automatic verification on the identity of the person and makes a corresponding action and if the identity verification is successful, a camera is started to record videos of a work project, or a database takes corresponding measures of alarm check and the like so as to prevent non-maintenance personnel from approaching a dangerous device and prevent maintenance personnel from personal injuries caused by finding of a wrong target device. The database allocates operation permission electronic certificates to maintenance personnel who already obtain work tickets or operation tickets and the maintenance personnel can only enter specific allowed areas to work when wearing the operation permission electronic certificates and can maintain a device only after fingerprint verification. The transformer substation device maintenance safety monitoring system and method have the advantages of being high in spontaneity, accurate in monitoring, high in safety coefficient, reasonable in design, simple and convenient to operate and high in performance cost ratio so that the security of devices and maintenance personnel is ensured.