The application provides an MAC address learning method and device. The method is applied to a VTEP of an EVPN, and comprises the following steps: receiving an address synchronization message which is sent by the remote VTEP and carries a first MAC address and a high priority function notification identifier, wherein the high priority function notification identifier indicates that a dynamic MAC address learning high priority function is opened at a first user port corresponding to the first MAC address on the remote VTEP; adding a high priority function identifier in a first MAC table item that contains the first MAC address on the local VTEP according to the high priority function notification identifier; and after receiving a user message that takes a source MAC address as the first MAC address from a second user port on the local VTEP, forbidding to update an outgoing interface in the first MAC table item as the second user port according to the high priority function identifier in the first MAC table item, and forbidding to synchronize the first MAC address to the remote VTEP.