Rheumatic heart disease is referred to as rheumatic heart disease, the clinical manifestations of this disease to myocarditis, endocarditis is the most common, can also occur in pericarditis, mildly asymptomatic, serious cases can lead to heart failure. 1. Myocarditis can lead to heart enlargement, diffuse apical beat, tachycardia which is not proportional to body temperature, and muffled heart sound, some can smell the prancing heart rhythm and apical systolic murmur, and 75% of children can smell the mid-diastolic sighing murmur in the aortic valve area, and electrocardiogram suggests the prolongation of the PR interval, the change of the ST-T, or cardiac arrhythmia. 2. Endocarditis mainly invades the mitral valve, followed by the aortic valve, resulting in valve closure insufficiency, which leads to corresponding symptoms and signs, such as the apical region to the axillary conduction of the systolic blowing murmur, the aortic valve second auscultation area (the left edge of the sternum, the third intercostal space) can be smelled in the mid-diastolic sighing murmur. 3. Acute valve damage is mostly congestion and edema, which disappears during the recovery period, but repeated recurrences can cause permanent scarring of the valve, leading to rheumatic heart disease. Pericarditis is mostly coexisting with myocarditis and endocarditis, i.e. total carditis. 4. In the early stage when the amount of effusion is small, there may be pain in the precordial region, sometimes pericardial friction sound can be heard, and the ST segment of electrocardiogram is widely bowed back and elevated downward; in the case of large amount of effusion, there are cardiac tamponade manifestations such as disappearance of pulsation in precordial region, distant heart sound, jugular vein rage, liver enlargement and so on, and the chest radiograph shows the heart flask-like enlarged, and the electrocardiogram shows the low-voltage, and the diagnosis of pericardial effusion can be confirmed by the echocardiogram. 5. It can be accompanied by chorea, subcutaneous nodules and erythema annulare. Patients with chorea have a good prognosis, and it can be cured naturally after 4-6 weeks, and a few of them have left neuropsychiatric symptoms. Of course, in addition to rheumatic heart disease, these symptoms can also be caused by other causes and diseases, it is recommended to consult a doctor in time to find out the cause of the disease, so as not to delay the condition.