This system is mainly used in the nuclear accident. It can quickly set up environmental monitoring points in the area outside the accident site and set up a regional environmental monitoring network to achieve accurate measurement and judgment on the positioning of monitoring points, dose monitoring, personnel proximity and other information, and play a warning function for illegal entrants and staff. At the same time, the radiation monitoring network can be connected to the monitoring center via the Internet to achieve rapid and accurate transmission of information and provide accurate on-site information for the disposal of radiation accidents.