The most common factor for cardiovascular stenosis is atherosclerosis, followed by arteritis. The risk factors of arteriosclerosis are: uncontrollable factors: family heredity, age, gender, controllable factors: smoking, heavy drinking, hypertension, diabetes, hyperlipidemia, anxious emotional tension, excessive consumption of oil and salt, little intake of vegetables and fruits (vitamins and trace elements), too little exercise, obesity (especially abdominal obesity or abdominal-to-hip ratio exceeds the standard), etc. Cerebral infarction is the narrowing of blood vessels to blockage, or the formation of thrombus on this basis, resulting in local ischemic necrosis of brain tissue and brain function loss, which can be life-threatening in serious cases. Cerebral infarction is like a field of crop seedlings dying of drought due to lack of water. In fact, very much like farmers watering the land, where the ditch is narrow and shallow, where there is little or no water over, this ditch water supply area will appear drought or even crop seedlings sweat to death. As a result, there are two kinds of situations, such as the ditch network is well built or neighbors watering the land to the head, from the other end of the welcome watering or from the small gap on the ridge through, your land is not drought, crops grow normally. If the ditch network is not well built or your neighbor is stingy and does not give you water, your crop seedlings will have drought or even die of drought. Back to the blood vessels, a stenosis blockage side branch circulation compensation perfect will not necessarily have cerebral infarction, in this case there can be no symptoms, maintain stable blood pressure, to ensure cerebral perfusion pressure, you can reduce the emergence of cerebral infarction; such as cerebral stenosis occlusion, side branch circulation compensation is not complete, it will occur ischemic necrosis, cerebral infarction. Cerebral infarction is like a field of crop seedlings dying from lack of water and drought. If the water supply is improved early, the crop seedlings have the hope of survival, but the longer the time, the smaller the hope of survival. Therefore, early detection and early treatment of ischemic cerebrovascular disease is advocated, and scientific application of medical treatment. However, not all cerebrovascular blockages can be recanalized. Scientifically speaking, no matter what methods are applied, the chances of cerebrovascular recanalization after infarction are very low, because most of them are atherosclerotic vascular occlusion, not thrombosis, and there are relatively more methods for recanalization of large blood vessel stenosis, but few methods for small blood vessels. The improvement of neurological function depends on the degree of nerve necrosis and the degree of peripheral compensation, but there is a great difference between people. After the onset of cerebrovascular disease, there are progressive period, stable period, and improvement period (recovery period). The rapid recovery period of cerebrovascular disease is 3-6 months after the onset of the disease, and the slow recovery period is more than 2 years. As the saying goes, getting sick is like a mountain to dispel the disease. After cerebral infarction, you should have confidence and believe that you will recover gradually. However, the final recovery depends on the location and size of the cerebrovascular disease and the improvement of blood supply to attack the surrounding brain tissue to compensate for your request, even if the infarct is small in critical areas recovery is not ideal. Therefore, it is said that sometimes medicine is helpless.