Neck rotation sound clinically known as neck activity popping, can be physiological factors or pathological factors, such as neck joint activity, cervical degenerative changes, etc.. 1. Physiological factors: the joint capsule of the neck, ligaments, etc. in the process of activity will produce friction sound, between the joints and joints contain a small amount of gas, the neck movement of gas bubbles can also be issued when the sound escaped. In this case, there is usually only a popping sound, but no neck discomfort, usually without treatment. 2. Pathological factors: When cervical degeneration occurs and osteophytes appear, friction between bones can occur and produce sound, usually accompanied by pain symptoms. In this case, it is usually necessary to consult a doctor in a timely manner to determine whether the bony growths are compressing the surrounding blood vessels, nerves and other tissues. These are just some of the possible causes. If the symptoms are combined with discomfort, it is recommended to consult a doctor in time to find out the cause and target treatment.