Cerebral vascular stents can last 30 years or more in most cases. The vast majority of vascular stents used today are alloys that are relatively stable. As long as no in-stent restenosis occurs, the blood vessels at the stent treatment site will remain open and the stent will not move out of place. Cerebrovascular stents are made of alloys, such as nickel-titanium alloys. The metal is very stable, and after the stent is implanted and the medication is applied consistently according to the doctor’s requirements, as long as there is no in-stent restenosis in the early stages, the stent will fuse with the blood vessel as the endothelium covers it, and will not dislocate easily. So there is no problem to maintain 30 years or even more. However, if the medication is not standardized in the early stage, and if in-stent stenosis occurs, this situation may require re-implantation of the stent or bypass surgery.