Embodiments of the present invention provide a packet sending method, including: receiving a packet, where the packet carries priority information indicating a priority of the packet; selecting, according to a correspondence between packet priorities and component links in a link aggregation group, a component link corresponding to the priority of the packet, where the link aggregation group includes at least a first component link and a second component link, availability of the first component link is higher than availability of the second component link, and in the correspondence between packet priorities and component links, a first priority corresponds to the first component link, a second priority corresponds to at least one of the second component link and the first component link, and the first priority is higher than the second priority; and sending the packet on the selected component link.