One aspect in the present specification is a method for a terminal to connect to a network in a wireless communication system, wherein the method can include: searching a network usable by the terminal; receiving, from the searched network, information about access groups supported by the searched network; determining, on the basis of the access group information, whether an identifier of the access group included in an allowed access group list preset in the terminal is included in the access group information; receiving, from the searched network, control information related to an access group for selecting the searched network; transmitting a registration request message to the searched network on the basis of the control information; and receiving a response message from the searched network as a response to the registration request message.