Embodiments of the present application provide a packet processing method in a Point-to-Point Protocol over Ethernet (PPPoE) authentication process and a relevant device. A first broadcast access server (BAS) exists in a broadcast domain in which a user terminal is located, the first BAS supports the PPPoE and corresponds to a first operator. The method includes receiving, by the first BAS, a PPPoE active discovery initiation (PADI) packet sent by the user terminal; and when determining that a quantity of authentication failures of the user terminal on the first BAS is greater than a preset threshold, skipping sending, by the first BAS, a PPPoE active discovery offer (PADO) packet to the user terminal in a preset period. The technical solutions in the embodiments of the present application resolve a problem that the user terminal cannot perform access because the user terminal establishes a session with the first BAS.