The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long term evolution (LTE). The present disclosure is for selecting a core network for a terminal in a wireless communication system, wherein an operation method of the terminal comprises the steps of: creating a message including information used for selecting a core network; and transmitting the message to a base station. Here, the information includes a value corresponding to a core network among mutually different core networks with which a connection may be made at the base station.