Based on the biggest mobile communication network at present in China, used the communication technique of CAN bus, the GPS remote monitoring system was combined with electronic control system of the rotary drilling rig to remote monitor the vehicles. It is significant to the acquisition and security of real-time traffic data. The paper introduced the application of hardware equipment, program design and data transfer flow to the rotary drilling rig with the GPS remote monitoring system and the application effect on the NR series of rotary drilling rigs with the system.