In our society, neck hazards caused by cell phones or electronic handheld devices have become a very common problem among young people, and some experts are worried about whether they will lead to health problems for an entire generation. It is obvious that improper use of cell phones causes neck problems. Some people have commented that this is a result of modernization, that cell phones and computers are the main culprits of the current cervical problems and that the use of cell phones and computers should be eliminated or reduced, which is actually a very negative solution. Cell phones and computers (tablets, laptops, or desktop computers) have become an inseparable part of life and work, and there is no other way to adapt to such work or life patterns. Research on the damage to the neck caused by inappropriate use of cell phones is necessary and can only be effectively prevented by studying which postures or movements cause damage to the neck or cervical spine. Tendon imbalances and tendons take precedence. Almost all common neck injuries or lesions have their onset originating from problems in the soft tissues of the neck, especially damage to the posterior extensor muscle groups of the neck. Head in a low position to look at the phone or computer, the back of the neck muscles in order to maintain the posture of the low head position, in a state of tension, the lower the head down, the more the muscles are pulled by the force. If the head down time is not long, not more than 20 minutes (each person can keep the head down time is not the same, generally not more than half an hour), mainly by muscle power on the line; if the time is longer, muscle fatigue, inability to maintain the head down posture, will let the ligaments out of more force to maintain the posture, and then longer, the neck will appear soreness; if still maintained in the low position, the human body will be raised shoulder, back, and other muscle contraction to assist the neck muscles, and the neck muscles to maintain the low position, and the neck muscles to maintain the low position. If the head down position is still maintained, the body will recruit other muscles in the shoulders and back to contract to assist the neck muscles, and then continue to maintain it, the back of the shoulders and even the lower back will experience tension, stagnation, and a feeling of pain and soreness. Repeated neck muscle injuries will gradually cause inflammatory reactions in the neck muscles and scar tissue, resulting in a decrease in muscle function, imbalance in muscle movement, changes in cervical vertebrae and neck muscle mechanics, and then changes in cervical vertebrae curvature with degenerative changes in the intervertebral disc tissues, which in turn will produce a series of pathological reactions and more symptoms. In order to avoid improper use of cell phones and computers on the neck damage, change posture, increase the strength of the back of the neck muscle groups is the best means of prevention. 1.When looking at the phone, lift the phone high, the center of the phone screen and the eyes at the same height, so that the head to maintain a vertical position. 2, the time should not be too long; often change posture. 3.The cell phone should not be too big or too heavy; be good at supporting the cell phone with the help of instruments to reduce the load. 4, learn the requirements of the Chinese traditional gong method in the virtual collar top strength, head to maintain a vertical position, conscious of the top of the head there is an invisible force upward pulling the head. 5, training the back of the neck muscle strength: static confrontation training, that is, with both hands crossed to hold the back of the head, the head backward force, the hand to be moderate strength to confrontation, do not do the low head tilt of the movement, but just static confrontation, lasts for 3-5 seconds, relaxation for 3-5 seconds, and then static confrontation, repeated 5-7 times, every hour to do a time, you can do more than ten times a day. It should be reminded that the elderly, especially patients with osteophytes (also known as bone spurs) or spinal stenosis, or patients with cervical vertigo, should not tilt their heads excessively, or turn their heads drastically at will, so as not to aggravate the condition.