The monitoring and warning equipment of environmental radiation used for monitoring and warning incidents and anomalies of environmental radiation has been designed and manufactured based on ARM microprocessor technology. With the advantages of ARM microprocessor, the equipment can have modern features, the ability to collect and analyze continuous data and diverse connections, on line with the operating center, and real- time interoperability. Through the implementation of the state-level project KC05.16/11-15, the scientists at Hanoi Irradiation Center had succeeded in the research and application of ARM microprocessor to manufacture the equipment for monitoring and warning environmental radiation. This success brings the possibility of mastering the technology, localization to manufacture this equipment, facilitate the management, usage, and maintenance of the equipment, and contribute to the process of building and developing the network of monitoring and warning radiation in Vietnam.