The reason for the lightness of the patient’s head is to consider the following aspects: 1, to consider the performance of cerebral neurological disorders, this category of patients have obvious causes, such as poor rest, fatigue, mental tension, easy to appear in the case of lightness of the head. 2, is also the most common, seen in middle-aged and elderly people with cerebral atherosclerosis, chronic cerebral ischemia, hypoxia will have a lightness of the head. 3, to consider with cervical spondylosis has a certain relationship, when there is cervical spondylosis intervertebral disc protrusion, will cause a certain compression of the vertebral artery and nerve, will also cause dizziness, light head symptoms.