The success rate of cerebral vascular stenting is very high, basically it can reach 95%-99%, with the continuous improvement of the technical level of intracranial placement of stents is also improving, basically as long as the surrounding area is not adjacent to the very important brain tissues as well as other important blood vessels, the success rate of stenting is 95%-99%. accidents are often due to the patient’s own condition, and there are a lot of patients who suffer because of Unexpected situations are often due to the patient’s own medical condition. Many patients suffer from bleeding complications due to the presence of a perforating branch in the blood vessel, which can cause various complications during the process of perforating branch blockage, or due to the abnormal reaction of the body during the process of anticoagulation, all of these may cause stenting to fail. Stent placement is a very successful treatment and the level of technology can reach a very mature state.