Mitral valve repair surgery is more common in valve surgery and generally has a high success rate. Patients should not be alarmed and should cooperate with the treatment. Mitral valve repair surgery is performed to treat deformities caused by mitral stenosis and insufficient closure of the mitral valve. The key to the success of mitral valve repair is the patient’s baseline status and the patient’s cardiac function class. Therefore, a good baseline condition and a low cardiac function class can greatly improve the success rate of the procedure. If moderate or severe mitral stenosis or insufficient closure is detected during a physical examination, it is recommended that mitral valve repair be performed as soon as possible. If surgery is delayed, the patient’s baseline status may decrease and the patient’s cardiac function class may increase, thus early detection and treatment is recommended. In conclusion, mitral valve repair surgery has a high success rate, and patients are advised to undergo early surgical treatment under the guidance of their physicians.