A method and device for processing a service in a mobile communication system based on SDN technology are provided. The method of controlling access caches in a communication network includes receiving information about contents requested by a user equipment (UE) connected to a first base station. The method also includes transmitting a forwarding request that requests to control at least one switch in order for an access cache that has the contents and that interworks with a second eNB to transfer the contents to the first eNB.