The stiffness of neck muscles, a. Consider the change of cervical spine curvature caused by prolonged head-down activities, coupled with the cold, which easily leads to the spasm of neck muscles, resulting in the obvious feeling of wrinkled and stiff neck muscles when the patient moves the neck. Second, consider nerve root compression in the neck, after the compression leads to optic nerve innervation of the neck muscles, which causes reduced relaxation and stiffness of the patient’s neck. Nerve root compression is accompanied by numbness, soreness and swelling of the skin of the neck. For the change of cervical curvature, the spasm of the neck muscles caused by cold, and the stiffness and tightness of the local muscles of the neck, the symptoms are obviously reduced after pressing and rubbing, especially after pressing and hot compressing, and the symptoms are obviously relieved. For the symptoms caused by nerve compression, rubbing also has a certain effect, but this condition is often persistent.