Provided is a method for a terminal controlling access in a wireless communication system. The method comprises: obtaining service-specific access control information; obtaining service group access control information; and controlling access to a specific type of service based on the service group access control information and the service-specific access control information. The service-specific access control information includes a service-specific barring factor parameter which is applied to the specific type of service. The service group access control information includes a service group barring factor parameter which is commonly applied to specific service groups that include at least one type of service.