Method and device for establishing agent member database

The embodiment of the invention discloses a method and device for establishing an agent member database and relates to the field of communication. According to the method and the device, an agent database structure does not need to be added to store an IGMP (Internet Group Management Protocol) snooping agent member database after the IGMP snooping agent member database is established, so that the data structure and the complexity of a system can be simplified. The method comprises the following steps of: determining group records in the agent member database according to a virtual local area network (VLAN) member list by utilizing a switch; and establishing the agent member database by utilizing the group records. The method and the device are suitable for two-layer switches running IGMP snooping.