The present application relates to the technical field of communications, and in particular to a communication method and apparatus. For example, the communication method and apparatus support AMP-related standards, or are applicable to the IEEE 802.11a / b / g standards, 802.11n standard, 802.11ac standard, 802.11ax standard, 802.11be standard, or 802.11bn standard, and other standards of the IEEE 802.11 series. An AMP STA may generate and send a synchronization field on the basis of a first synchronization sequence and a second synchronization sequence, the first synchronization sequence being used for phase detection, and the second synchronization sequence being used for correlation detection. Thus, after receiving the synchronization field, an AMP AP can perform coarse synchronization on the basis of the first synchronization sequence, quickly determine the position of the second synchronization sequence, and perform fine synchronization on the basis of the second synchronization sequence, thereby improving synchronization accuracy.