The invention supports access and integration of multiple heterogeneous networks including a wireless network, an on-site bus, an Ethernet and the like, and provides a household gateway protocol conversion and configuration method and device, and a device description file. A configurable protocol method is mainly employed to solve the problem of conversion among multiple heterogeneous protocols. A gateway is provided with configurable protocol software, the software generates description files of various device protocols, and a protocol conversion driving file is generated through a configuration method according to protocol attributes by use of a software tool. The gateway, after loading the driving file, converts the driving file to a communication protocol which can be identified by a device and automatically maps to generate a unified TCP / IP protocol frame routing table. The description files, based on a ClassAD task description language, are used for providing a flexible and extensible heterogeneous network model to describe any services or data. The gateway, through identification and description of device information, determines the type and meaning of the information, omits information parsing, reduces the time for processing the information by the gateway, and improves the real-time performance of a system.