In the design of the monitor and control system, the data of the individual units are exchanged frequently, at the same time, the working conditions of the system is very hard, which has strictly need for the communicative speed, communicative distance, as well as the anti disturbance. According to the actual need, the paper introduces the application of controller area network BUS for the system of the monitor and control. The actual operation has proved that the CAN BUS is fitful for monitor and control system in the communicative speed, communicative distance, the anti disturbance ability as well as the flexibility of the communicative network.