With the emerging triple play and even multi play, it is becoming increasingly important to deploy home gateway in the home networks. Therefore, it is necessary to have comprehensive knowledge of the home gateway based on telecom networks and to position it accurately. The home gateway is the equipment for the communication between inner and outer areas of the home networks, offering technical measures as Quality of Service (QoS), security, and management. Through the home gateway, the home network can provide services as home communications, information, entertainment, home offices, intelligent home services, and more. The technology of home gateway is immature and different manufacturers on the industry chain need to work together to promote its progress. With the emerging triple play and even multi play, it is becoming more important than to deploy home gateway in the home networks. Therefore, it is necessary to have comprehensive knowledge of the home gateway based on telecom networks and to position it accurately. The home gateway is the equipment for the communication between inner and outer areas of the home networks, offering technical measures as Quality of Service (QoS), security, and management. Through the home gateway, the home network can provide services as home communications, information, entertainment , home offices, intelligent home services, and more. The technology of home gateway is immature and different manufacturers on the industry chain need to work together to promote its progress.