Vertebral artery cervical spondylosis is relatively dangerous, and this danger is mainly reflected in the following aspects: First, during the onset of vertebral artery cervical spondylosis, it may cause a transient restriction of blood supply to the brain, which is clinically known as TIA, and this condition may lead to transient syncope of the patient. If the patient is in an unsafe environment, the life of the patient will be at risk if fainting occurs. Secondly, vertebral artery cervical spondylosis may lead to a long-term lack of blood supply to the brain, which may induce cerebral infarction. If the patient is old or has high blood lipid content, the probability of cerebral infarction will be greatly increased. Thirdly, there is a possibility of complications of cerebral embolism, which is often most common in patients suffering from heart-related diseases, such as atrial fibrillation. If the intraventricular embolus is dislodged and passes through the vertebral artery, it is easy to get stuck in the narrow vertebral artery. Once this happens, the blood supply of the whole posterior circulation can be impaired, which can lead to a large-scale cerebral infarction, or cerebral embolism, which can threaten the life of the patient.