Human-generated non-ionizing radiation sources in the environment can be roughly divided into two categories: radio frequency and extremely low frequency, such as mobile phone base stations and power transformers. Modern technology and civilization improve people's quality of life, and also cause electromagnetic field exposure. According to the division of labor of the Executive Yuan, the Environmental Protection Agency is responsible for the impact and monitoring of electromagnetic waves on the environment. ”, also conduct random testing of electromagnetic wave emission sources and public spaces in the environment, follow the precautionary principle, and conduct cross-ministerial consultations with competent authorities for various purposes (such as NCC, State-run Association of the Ministry of Economic Affairs) to conduct source management, and establish a local monitoring database at the same time. Geographic Information System The “National Non-Ionizing Radiation Geographic Information System” was established, and the measurement results and information were published in the “Non-Atomic Energy Ionizing Radiation Control Network”.