From the professional point of view of neurology, cerebral insufficiency is usually due to the narrowing of cerebral arteries to a certain degree, the brain does not get enough blood supply, thus causing a series of clinical manifestations due to cerebral insufficiency of blood supply. From this analysis, we can see that the cause of cerebral insufficiency is clear, mainly cerebral artery stenosis, which is one of the most important causes. Of course, some patients with heart disease, such as cardiac arrhythmia, may also show signs of cerebral hypoperfusion. In terms of specific analysis, once cerebral stenosis occurs, the core of treatment is to release the stenosed artery, which is usually diagnosed by CTA or MRA cerebral angiography. In this case, the main treatment is for the stenotic artery, which can be taken as stent treatment or even bypass treatment. At the same time, in terms of drugs, anti-atherosclerotic treatment is mainly used for the plaque causing the stenosis, commonly used drugs such as aspirin and statins.