Abstract: Setting end to end quality of service in IPTV content delivery network is very meaningful in reality, and its effect monitoring and management have new features. We study the IPTV content distributing network of carrier and analyse different methods of QoS, which is focused on network layer and data link layer in OSI model. Then combined with backbone, MAN, access network and STB, we advise the proper methods of QoS for keeping the transmitting consistency. At last, we provide the demands on daily effect monitoring. All of the principles and methods are fit with the real network and have the value of extending in complex IP network.