A network access method, wherein a network identification of a public land mobile network, PLMN, of a visited place is a network identification of an operator of the visited place, which signs a roaming agreement with an operator of a home place to which a subscriber identity module attached to a mobile communication terminal (100, 200) belongs, and comprising: determining, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, whether the network identification of the PLMN of the visited place exists in a local memory of the mobile communication terminal (100, 200); triggering, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, to perform a step of transmitting a request for acquiring shared network information to a shared server, if a determined result is no; triggering, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, to perform a step of adding the network identification of the PLMN of the visited place to an equivalent PLMN, EPLMN, list, if the determined result is yes; transmitting, by the mobile communication terminal (100, 200), the request for acquiring shared network information to the shared server in response to the mobile communication terminal (100, 200) detecting that the network identification of the PLMN of the visited place does not exist in the local memory of the mobile communication terminal (100, 200) before the mobile communication terminal (100, 200) reaches the visited place, wherein the shared network information comprises the network identification of the PLMN of the visited place pushed to the shared server; receiving, by the mobile communication terminal (100, 200), the shared network information which the shared server transmits in response to the request, and acquiring the network identification of the PLMN of the visited place from the shared network information; adding, by the mobile communication terminal (100, 200), the network identification of the PLMN of the visited place to the EPLMN list by the mobile communication terminal (100, 200), wherein the EPLMN list is stored in the mobile communication terminal (100, 200) and comprises a network identification of a PLMN of the home place and the network identification of the PLMN of the visited place; and accessing, by the mobile communication terminal (100, 200), a network according to the EPLMN list after the mobile communication terminal is moved from the home place to the visited place and the mobile communication terminal is turned on or closes a current airplane mode. determining, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, whether the network identification of the PLMN of the visited place exists in a local memory of the mobile communication terminal (100, 200); triggering, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, to perform a step of transmitting a request for acquiring shared network information to a shared server, if a determined result is no; triggering, by the mobile communication terminal (100, 200) and before the mobile communication terminal (100, 200) reaches the visited place, to perform a step of adding the network identification of the PLMN of the visited place to an equivalent PLMN, EPLMN, list, if the determined result is yes; transmitting, by the mobile communication terminal (100, 200), the request for acquiring shared network information to the shared server in response to the mobile communication terminal (100, 200) detecting that the network identification of the PLMN of the visited place does not exist in the local memory of the mobile communication terminal (100, 200) before the mobile communication terminal (100, 200) reaches the visited place, wherein the shared network information comprises the network identification of the PLMN of the visited place pushed to the shared server; receiving, by the mobile communication terminal (100, 200), the shared network information which the shared server transmits in response to the request, and acquiring the network identification of the PLMN of the visited place from the shared network information; adding, by the mobile communication terminal (100, 200), the network identification of the PLMN of the visited place to the EPLMN list by the mobile communication terminal (100, 200), wherein the EPLMN list is stored in the mobile communication terminal (100, 200) and comprises a network identification of a PLMN of the home place and the network identification of the PLMN of the visited place; and accessing, by the mobile communication terminal (100, 200), a network according to the EPLMN list after the mobile communication terminal is moved from the home place to the visited place and the mobile communication terminal is turned on or closes a current airplane mode.