Abstract: Provided are a cloud platform binding method and system for an Internet of Things card, and a device and a medium. The method comprises: in response to a device online instruction, acquiring a login message and device identification information and sending to an Internet of Things server; if they pass the verification of the Internet of Things server, loading a preset PGW network element configuration first-level script, and pushing acquired card information to the Internet of Things server; receiving a cloud object storage address which corresponds to the card information; if a data uploading request is detected, loading a preset PGW network element configuration second-level script, and sending the cloud object storage address to the Internet of Things server for legitimacy verification; and if it passes the legitimacy verification, sending the card information and acquired device data to the Internet of Things server. An automatic cloud-card binding function is realized.