Usually bioprosthetic valves do not last 30 years. Biologic valves typically last 10-15 years, with very few patients able to use them for 15-20 years, and a few patients only for a few years. Prosthetic valves are divided into mechanical valves and biologic valves. Biologic valves are made from animal pericardium or aortic valves with artificial stents and fabrics, which have better antithrombotic properties and require only 3-6 months of postoperative anticoagulation with warfarin, which does not require lifelong anticoagulation and can effectively reduce anticoagulation-related complications, so biologic valves should be preferred for elderly patients. However, the biggest disadvantage of biologic valves is that they are subject to failure, particularly calcification or tearing of the valve. The usual life expectancy of a bioprosthetic valve is 10-15 years, and there are a few patients who use the bioprosthetic valve for only a few years before it needs to be replaced again. A very small number of patients are able to make the bioprosthetic valve last 15-20 years, but applications for 30 years are almost uncommon. In addition, bioprosthetic valves are more expensive, typically 2-4 times more expensive than mechanical valves. Mechanical valves are better tolerated and less prone to damage, so they last longer and are preferred for replacement in younger patients. However, mechanical valves also have certain disadvantages; they are prone to thrombosis on the surface, require lifelong warfarin for anticoagulation, and need to be monitored for changes in coagulation function. In addition, mechanical valves are louder, and a “clattering” sound may be heard from the heart in the dead of night. When choosing between a biologic or mechanical valve, patients should consider their age, whether they have any contraindications to long-term anticoagulation, and their financial situation.