Many people put their mobile phone chargers on the bedside at night to charge, and medical physiology experts warn that within 30 centimeters of the mobile phone charging socket, the number of immune function cells in the human body may be reduced. The human body should be more than 30 cm away from the mobile phone charging socket, and should not be placed at the bedside. Experts say that the intensity of the electromagnetic wave of one milligauss will make the body's antibodies against blood cancer cells unable to carry out anti-cancer effects; At 12 milligos, the thymocytes that control the production of T cells die, while disabling the anti-breast cancer drug tybutiphen (used by about two-thirds of breast cancer patients for a long time) and preventing the body's melatonin hormone from controlling breast cancer cells. 300 milligauss interferes with the hormonal cycle, lengthening the reproductive cycle from 22 days to 25 days. Experts point out that the current of the mobile phone charging socket is about 60 Hertz per second, and the mobile phone base station is 900 to 1800 million Hertz. According to the device in the mobile phone charging socket near the detection, found that no protective measures in the mobile phone charging socket during the frequent period of electricity can be measured 1400 milligauss, with good protective measures can not be detected; When the distance is more than 30 cm from the charging socket without taking protective measures, the electromagnetic wave intensity is reduced to less than 2 msgauss. Cell phone use in the car is more harmful to people. Office workers will be harmed by the strong electromagnetic wave of mobile phones during the commute. The carriages of these vehicles are metal, and a large number of mobile electromagnetic waves are reflected back and forth in the car, and the density of electromagnetic waves greatly exceeds international safety standards, seriously affecting human health.