Internet of things multi-gateway data synchronization method, system and device and medium

The invention relates to an Internet of Things multi-gateway data synchronization method, system and device and a medium, and the method comprises the steps: initiating a data synchronization request through a preset gateway in a multicast group, and initiating multicast to other gateways in the multicast group according to the data synchronization request, if the data version received by other gateways in the multicast group is newer than the own data version, updating the data version into a new data version, and stopping multicast; if the data versions received by the other gateways in the multicast group are older than the own data versions, the other gateways initiate data synchronization requests, and multicast is continued until the data versions of all gateways in the multicast group are synchronized to be the latest versions. According to the invention, the automatic synchronization of the data messages among the gateways in the multicast group is realized, the synchronization of latest data is ensur