Cerebral blood supply insufficiency at the age of 40, if the patient does not have hypertension, diabetes mellitus, hyperlipidemia, hyperhomocysteinemia and other risk factors for cerebral atherosclerosis, may be caused by cerebral vasospasm, such as whether the patient is mentally overstressed, stressed, neurasthenia, poor sleep, irregular life. If the above factors exist, the patient should improve sleep, relax, reduce stress, participate in appropriate physical exercise, go to sleep and get up on time, and develop good habits of work and rest, which may reduce the patient’s symptoms, and oral nimodipine and ginkgo biloba drip pills may be given if necessary. It may also be caused by cervical spondylosis, if the patient often lowers his head to play cell phone, play computer, may cause neck muscle spasm, can cause cervical spondylosis, cerebral blood supply insufficiency, should further see orthopedics.