A network access method performed by a network device, wherein the network device is a base station, comprising: obtaining (204, 301) by the network device, indication information, wherein the indication information is used to indicate whether a terminal supports air communication, wherein the indication information comprises at least one of - a capability information of the terminal and the capability information is provided to the network device by a mobility management entity, MME, or the terminal; and/or - a flight certificate of the terminal and the flight certificate is provided to the network device by a service supervision platform, the MME or the terminal; and/or - a subscription information of the terminal and the subscription information is provided to the network device by the MME, receiving (201, 301) by the network device from the terminal, a request to access a network in which the network device is located, and receiving, by the network device, a location area identity of a location of the terminal, wherein the location area identity is received from the terminal in a radio resource control, RRC, connection setup complete message; and when the location area identity indicates that the location of the terminal is in a space domain location area, and the indication information indicates that the terminal does not support the air communication, determining (205, 304) by the network device, that the terminal is prohibited from accessing the network in which the network device is located;and, when the location area identity indicates that the location of the terminal is in the space domain location area, and the indication information indicates that the terminal supports the air communication, determining (205, 304), by the network device, that the terminal is allowed to access the network in which the network device is located wherein the space domain location area and a ground location area have different location area identities. obtaining (204, 301) by the network device, indication information, wherein the indication information is used to indicate whether a terminal supports air communication, wherein the indication information comprises at least one of - a capability information of the terminal and the capability information is provided to the network device by a mobility management entity, MME, or the terminal; and/or - a flight certificate of the terminal and the flight certificate is provided to the network device by a service supervision platform, the MME or the terminal; and/or - a subscription information of the terminal and the subscription information is provided to the network device by the MME, - a capability information of the terminal and the capability information is provided to the network device by a mobility management entity, MME, or the terminal; and/or - a flight certificate of the terminal and the flight certificate is provided to the network device by a service supervision platform, the MME or the terminal; and/or - a subscription information of the terminal and the subscription information is provided to the network device by the MME, receiving (201, 301) by the network device from the terminal, a request to access a network in which the network device is located, and receiving, by the network device, a location area identity of a location of the terminal, wherein the location area identity is received from the terminal in a radio resource control, RRC, connection setup complete message; and when the location area identity indicates that the location of the terminal is in a space domain location area, and the indication information indicates that the terminal does not support the air communication, determining (205, 304) by the network device, that the terminal is prohibited from accessing the network in which the network device is located;and, when the location area identity indicates that the location of the terminal is in the space domain location area, and the indication information indicates that the terminal supports the air communication, determining (205, 304), by the network device, that the terminal is allowed to access the network in which the network device is located wherein the space domain location area and a ground location area have different location area identities.