1. An apparatus for setting up a gateway for an AUTomotive Open System ARchitecture (AUTOSAR)-based vehicle network, comprising: a candidate selection unit for selecting an Electronic Control Unit (ECU) connected to at least two communication clusters, from among a plurality of ECUs, as a gateway candidate; and a gateway generation unit for generating a gateway instance with reference to the ECU selected by the candidate selection unit, and generating a gateway meta-model including the gateway instance based on instance generation input values entered by a user.