The key management machine is specifically designed for managing on-site unlocking keys. It consists of a cloud server, key management host, and mobile application. The system supports various authorization methods, including QR code authorization, dynamic code authorization, local authorization, and SMS authorization, to achieve authorized unlocking. It employs contactless RFID card technology to manage all unlocking key applications, authorizations, and usage records through information technology, ensuring standardized management of unlocking tools (keys) through technical measures.