The present invention discloses a home network management system which can perform processing, conversion and transmission of data between a plurality of client devices and a plurality of home appliances. The home network management system resides in a home master device connected to at least one home appliance through a first network and connected to at least one client device through a second network separated from the first network, and is controlled by a central processing means of the home master device. The system includes a channel handling module for transmitting/receiving a first type of packet between the home master device and the home appliance, a transmission handling module for performing conversion between the first type of packet from the channel handling module and a first type of message from a service management module, and transmitting the converted packet and message, the service management module for performing conversion between the first type of message from the transmission handling module and a second type of message from a connection handling module, and transmitting the converted messages, and the connection handling module for performing conversion between a second type of extension message from the client device and the second type of message from the service management module.