Insufficient cerebral blood supply in young people is mostly caused by cervical spondylosis, hypotension, anemia and other disease factors, which generally manifest as dizziness, head drowsiness, fatigue, blurred vision and other symptoms, some of which may be accompanied by nausea and vomiting. Generally after rest and active treatment of the original disease, the symptoms will be improved, do not worry too much. Some young people with cerebral insufficiency is caused by cerebral vascular malformation, narrowing of blood vessels and other factors, in addition to the above symptoms, there may also be numbness and weakness of one limb, or even cerebral thrombosis. If dizziness is accompanied by numbness and weakness of one side of the limb, it is recommended to go to the hospital in time to improve cranial CT or MRI, cerebral hemogram and other examinations to clarify the specific causes, and then targeted treatment. In normal life, we should pay attention to regular work and rest, avoid staying up late, avoid overexertion, pay attention to light diet, avoid eating too greasy food, avoid long-term sedentary, low head. At the same time, we should increase physical exercise to improve the body’s immunity, strengthen the body and reduce the probability of disease.