Cell phones are indispensable items for people’s life, study and work, promoting the development of human society, in the correct, moderate use, and will not produce greater harm to the human body. But if it is in a dark environment, or in a bad posture and other long time excessive use of cell phones, will have a lot of harm to human health, mainly in the following areas: 1, sleep disorders: many people carry their cell phones with them at all times, in addition to daily calls, but also long hours for part of the entertainment activities. Long-term viewing of the contents of the phone, may cause excessive excitation of nerves, causing insomnia, dreaming and other sleep disorders, and then patients can also appear headache, dizziness, memory loss and other uncomfortable symptoms, as well as easy to tension, fatigue and other neurasthenia performance; 2, eye damage: eye is an important target organ of electromagnetic radiation from cell phones, long-term use may lead to vision impairment, visual fatigue, dry eye syndrome, eye pressure rise, etc. . In addition, there is a certain amount of microwave radiation near the transmitting antenna of the cell phone, long-term use of the human body is potentially harmful. For example, women with weak constitution and menstrual disorders may aggravate the symptoms in the case of long-term use of cell phones. A small number of people may also have varying degrees of heart arrhythmia, blood pressure drop and other adverse performance.