What kind of valve is good for the heart mainly depends on the age of the patient, and the choice of mechanical valve or biological valve is based on age. 1. Patients under 60 years old are recommended to replace mechanical valves, which have no service life and can be used all the time, but they have to take lifelong anticoagulant drugs, such as warfarin, to prevent thrombus formation or detachment, causing cerebral embolism, lower extremity venous embolism and other serious consequences. 2. Biologic valves are recommended for patients over 75 years of age because anticoagulant medications in older patients are likely to cause bleeding, especially during cardiovascular surgery or intervention. Biologic valves have a life expectancy of approximately 12 years, which is usually greater than the remaining life expectancy of older patients. 3. In patients between the ages of 60 and 75, either a mechanical or biologic valve can be replaced. The specific valve to be used is based on the recommendation and advice of the physician.