Rheumatic heart valve disease is the most common heart disease in China, in adult cardiovascular disease, this disease accounts for about 40%, most patients for 20 to 40 years old young adults, women slightly more. Most patients are young adults between 20 and 40 years of age, with a slight increase in women. Clinically, simple mitral valve lesions are the most common, accounting for 70% to 80% of cases, while mitral valve combined with aortic valve lesions are the second most common, accounting for 20% to 30% of cases. How to diagnose thickened valves due to rheumatic heart valves? 1. If a diastolic rumbling murmur is detected in the apical region of the heart, accompanied by evidence of left atrial enlargement, combined with cardiac ultrasound, mitral stenosis can be diagnosed. 2.If a loud and rough III can be heard in the apical region. If a systolic wind-like murmur is heard in the apical part of the heart and there is evidence of left atrial and left ventricular enlargement, combined with cardiac ultrasound examination, mitral valve insufficiency can be diagnosed. If a loud and rough systolic wind-like murmur is heard in the aortic valve auscultation area, accompanied by left ventricular enlargement, the diagnosis can be confirmed by combining with cardiac ultrasonography. 4, according to the aortic valve area with diastolic wind-like murmur, left ventricular enlargement and peripheral vascular signs, combined with cardiac ultrasonography, it is not difficult to make a diagnosis.