Query device election method and device, multicast group router and readable storage medium

The embodiment of the invention provides a querier election method and device, a multicast group router and a readable storage medium, and the method comprises the steps: receiving a common query message sent by each opposite-end multicast router, determining a first priority field and a first IP address for each opposite-end multicast router when the multicast router is a querier, and carrying out the selection of the first priority field and the first IP address according to the first priority field and the first IP address; based on a comparison result of the priority field and the IP address of the multicast router at the opposite end and the first priority field and the first IP address, electing a querier, when the multicast router is a non-querier, determining a second priority field and a second IP address of the current querier, and sending the second priority field and the second IP address to the current querier; and electing the querier based on a comparison result between the priority field and t