Portable radiation detectors play an important role in environmental radiation monitoring. Environmental protection departments can use them to detect radiation levels in soil, water sources, air and other environmental elements, and detect abnormal emissions or leaks of radioactive substances in a timely manner. For example, in areas around nuclear facilities and near radioactive waste disposal sites, regular or irregular inspections can effectively assess the degree of radiation pollution in the environment and provide data support for environmental protection and governance. In addition, in some areas where natural radioactivity may exist, such as some rare earth mining areas, this equipment can also be used to monitor natural radiation background levels, providing a reference for local environmental planning and resource development.