It is not possible to generalize about the longevity of bypasses or stents. Stents are used for single lesions in one vessel, while bypasses are used for multiple lesions in one vessel and have different indications. Bypass is to restore blood flow by using one’s own blood vessels, which theoretically can prevent the recurrence of stenosis better than stents. However, bypass surgery requires open-heart surgery, which is more invasive than stenting and is more dangerous, and may not be tolerated by elderly patients. A stent is a new medical device that is implanted to expand the blood vessel and dilate the blocked area to unclog the blood vessel. The service life of a stent is about ten to fifteen years, but in the middle of that time the stent may fall off or be damaged. Usually, stents are recommended for elderly patients in poor physical condition, as they are less traumatic and quicker to recover. To summarize, whether it is stent or bypass surgery, it is recommended that patients should have a low-salt, low-fat and low-sugar diet, live a regular life, avoid alcohol and tobacco, and stay up late at night, and follow the doctor’s instructions to choose the appropriate surgical method.