The symptoms of hypoxia of cerebral blood supply are as follows: First, clinically, dizziness is the main manifestation, the patient’s dizziness is mostly drowsy, dizziness is accompanied by nausea, as well as walking drifting or walking on cotton, dizziness of cerebral blood supply is mostly seen in middle-aged and elderly patients. Second, if the symptoms of hypoxia of cerebral blood supply last longer, there will be difficulty in concentration, reduced calculation power, and in severe cases, memory loss is more obvious. Third, the symptoms of hypoxia of cerebral blood supply, in addition to dizziness will also appear daytime yawning, sleepy, difficult to sleep, individual patients will appear irritable or mental trance, easy fatigue, etc., cerebral blood supply deficiency can be examined by vascular ultrasound of the intracranial segment.