1. An apparatus for providing a dynamic quality-of-service (QoS) mapping through hybrid monitoring in digital home service, comprising: a media server for providing network-adaptive media streams for the digital home service; a media gateway for coupling the media server to a service network; a plurality of clients coupled to the service network for receiving media streams from the media server and for measuring a network state of the service network and system states of the clients through the hybrid monitoring; and a monitoring server including a domain manager, the domain manger receiving metric information fed back from the clients, performing comparison and analysis with respect to the received measurement information, determining causes of quality degradation of the digital home service, and delivering indication information according to the causes to the media server and the media gateway.