Cervical spondylosis does not usually occur suddenly, but may worsen suddenly. Most of the cervical spondylosis is caused by chronic strain injury resulting in cervical spine physiological curvature straightening, osteophytes, herniated intervertebral discs compression of the nerves caused by a series of degenerative pathologies, which may appear in the neck and shoulder pain, pain in one or both upper limbs, numbness, weakness in grasping, dizziness, panic and other clinical symptoms. Cervical spondylosis usually does not suddenly attack, most of the disease course is relatively long, with the increase of age, long-term poor posture and movement of the neck can gradually aggravate the condition of cervical spondylosis, recurrent episodes, the symptoms can be reduced after rest. Sudden aggravation of symptoms may occur under some triggering factors, such as excessive stretching and twisting of the cervical vertebrae or prolonged bowing of the head, which may lead to stiff neck, dizziness and nausea, and sudden emergence or aggravation of limb sensation or movement disorders. Patients with cervical spondylosis should seek medical treatment in time and under the guidance of doctors for standardized treatment, and usually pay attention to the maintenance of the neck, do neck health exercises and neck muscle exercise to prevent the onset or aggravation of the condition.