The present invention discloses a method, a terminal and a network-side access device for reporting PLMN. The method includes: receiving, by a terminal, a PLMN identifier list sent by a network-side access device; selecting, by the terminal, a first PLMN identifier from the PLMN identifier list, so as to connect with the network-side access device; and after the terminal is connected with the network-side access device, labeling, by the terminal, a second PLMN identifier preset in the terminal as a selected PLMN identifier and reporting the selected PLMN identifier to the network-side access device, wherein the first PLMN identifier is different from the second PLMN identifier. The present invention solves the technical problem of limitation of operation on PLMN reporting due to adopting the conventional PLMN reporting manner.