The formation of herniated discs in cervical spondylosis can compress the vertebral artery and lead to insufficient blood supply to the brain, which is complicated and usually easily mixed with many diseases, causing symptoms mainly including: 1. vertigo: that is, vertigo is caused when the head and neck are rotated, and under normal circumstances the head and neck are rotated, mainly between the neck 1/2, and the vertebral artery is compressed again, such as when the head is rotated to the right, the blood flow of the vertebral artery on the right side is reduced, and the blood flow of the vertebral artery on the left side is increased to compensate for the blood supply. If the blood flow of one vertebral artery has been reduced and has no compensating ability, when the head is turned to the healthy side, the blood flow of the healthy side will be reduced and the affected side has no compensating ability, which can lead to cerebral ischemia and vertigo attack, so the head and neck are turned to the healthy side during the attack and the lesion is on the opposite side. It is often accompanied by nausea, vomiting, sweating and other symptoms of autonomic disorders; 3. Sudden collapse: most of the attacks are sudden and have a certain pattern, often because the patient suddenly feels dizzy and headache when the head and neck are rotated in a certain position, the patient immediately holds his head, both lower limbs are weak and weak, and then falls down without any impairment of consciousness, vision and speech, and can Brain nerve damage: when ischemic changes occur in visual cortex, medulla oblongata and cerebral nucleus, it can cause corresponding brain neuropathy, resulting in sensory impairment, mainly manifesting as dysphonia, hoarseness and numbness of mouth and lips, and in severe cases, dysphonia can occur, even affecting swallowing, and some patients can have symptoms such as vision loss, blurred vision, diplopia, phantom vision and transient blindness.