Insufficient cerebral blood supply should be started from the following aspects: first, test blood pressure, because hypotension is the most common cause of insufficient cerebral blood supply, if found that blood pressure is lower than 90/70mmHg, you should take elevated drugs, such as raw vein capsule, raw vein oral liquid, etc.; second, check cerebrovascular nuclear magnetic, if there is cerebral vascular stenosis is also prone to cause insufficient cerebral blood supply; third, check the neck blood vessels Ultrasound, because all the blood in the brain comes from the carotid artery and vertebral artery, if there is stenosis in the carotid artery and vertebral artery, it is also easy to cause cerebral insufficiency; fourth, check the cervical spondylosis, patients with severe cervical spondylosis will also have cerebral insufficiency, but often accompanied by symptoms of nausea; fifth, the symptoms of cerebral insufficiency can take drugs to improve cerebral circulation, such as betahistine hydrochloride, flunarizine hydrochloride For patients with mild cerebral insufficiency, taking the above mentioned drugs can relieve the symptoms, if the drugs do not relieve the symptoms, you should go to the hospital for systematic examination and treatment.