Abstract: In view of problem of difficulty in maintenance and exchange of devices existed in traditional address curing method, the paper proposed a design scheme of embedded intelligent address allocation system. From the first communication module namely the first device, the system numbers in sequence automatically. The address number stores in data memory of corresponding communication module and can be output through serial port. Hardware and software of all communication modules of the system are the same, which will have no influence on maintenance and exchange and no limitation to position of the devices. The actual application showed that the system has reasonable design and can allocate address accurately.