The design of communication module for intelligent circuit breaker based on the PROFIBUS DPV1 protocol is introduced according to the demands of high-speed and real-time communication technology for network monitoring application. The system networking applications, the mechanism of communication protocol conversion based on data object map and the implementation of PROFIBUS DPV1 protocol was introduced. The main circuit diagram of hardware and software design was given. The actual operation shows that this module effectively implement the real-time monitoring and network control of circuit breaker.