Aiming at the problems of the traditional electric operation site protection facilities lack of intelligent supervision and early warning, this article designed an intelligent protection device for electrical operation based on general technology such as active infrared intrusion detection, pyro electric infrared, ultrasonic ranging and ZigBee wireless communication. It contains multiple independent measurement terminals and a host. The independent measurement is used to construct the virtual boundary based on active infrared intrusion detection technology; meanwhile, the host is used for the personnel management and system parameter setting. This protection device provides functions for predictability alarm and crossingline alarm. By using temperature measurement of pyro electric infrared, distance detection of ultrasonic, the devices anticipate the external factors of working area. With RFID technology, the staff can manage the working area in realtime. This scheme accords with the requirement of the real time control of electrical test equipment, and could be able to protect the safety of electrical working area reliably and effectively. It is of great significance for the realization of the intelligent protection system in field operation.