Equipment communication access authentication method, device, system and medium

The invention discloses a device communication access authentication method, device and system and a medium, and the method comprises the steps: obtaining initial access requests of a plurality of industrial Internet of Things devices for a device end; collecting equipment data and user images of the multiple pieces of equipment, performing unified processing on the equipment data of the multiple pieces of equipment, and generating a to-be-confirmed access request of each piece of equipment by utilizing the user images and the equipment data subjected to the unified processing; for the control end, acquiring and detecting a to-be-confirmed access request from the device end, and extracting encryption keys of a plurality of devices from the to-be-confirmed access request; and for each device, matching the encryption key corresponding to the current device with the decryption key stored in the cloud, and controlling the access of the current device according to a matching result. According to the invention, the