Valve replacement surgery, commonly known as “valve replacement”, is an operation to remove the original diseased valve and implant an artificial valve to replace the function of the valve with an artificial valve, thus avoiding further damage to heart function. If the heart is compared to a house, the valve is compared to the door, then the valve replacement surgery is like a house door is broken, can not close or open, we will remove the hinges on the door, so the old door is removed, the artificial valve is like a new door, the door is with the door frame as one, the old door frame and the new door frame fixed together the new door is installed, that is, the valve replacement surgery is completed. Valve replacement surgery is currently the most important surgical procedure for the treatment of rheumatic heart disease. Valve plication is a procedure that preserves your own valve and repairs the bad one to restore the original function of your own valve. It is like a room with a broken door that does not close tightly, so we fix the old door so that it can close tightly. Since the damage of rheumatic heart disease is usually more serious, fewer valves are in a position to be repaired.