Electromagnetic radiation pollution, also known as electronic fog pollution, high-voltage lines, substations, radio stations, television stations, radar stations, electromagnetic wave towers and electronic instruments, medical equipment, office automation equipment and microwave ovens, radios, televisions and cell phones and other household appliances will produce a variety of different frequencies of electromagnetic waves when they work, these electromagnetic waves fill the space, colorless, tasteless, invisible, and can penetrate the human body including When the intensity of electromagnetic radiation exceeds the limit of the human body or the environment can withstand, it will cause pollution to the human body.