A method and system for providing a content service such as an Internet Protocol Television (IPTV) using multiple devices are provided. A method, in which a gateway provides a content service using multiple devices, includes sending a service request to a service provider, receiving required list information from the service provider receiving the service request, the required list information indicating a list of devices required for a requested service, acquiring performance information of accessible devices on the basis of the required list information, receiving content with a service level corresponding to the acquired performance information from the service provider, and distributing the received content to the accessible devices to be used for the content service.