The specific complications of rheumatic heart disease are as follows: 1. heart failure, which is an inevitable complication of rheumatic heart disease, because patients with rheumatic heart disease have mitral valve or aortic valve stenosis, which can cause heart enlargement resulting in insufficient heart ejection, and patients have heart failure symptoms, such as difficulty in breathing and swelling of the lower limbs; 2. thromboembolism, which is a serious complication of rheumatic heart disease, because patients with rheumatic heart disease have mitral valve stenosis, which causes left Atrial fibrillation will aggravate heart failure and produce thrombus, and thrombus up to 60% in the atrium will block cerebral vessels to form cerebral infarction, and may block other parts, such as mesenteric artery, lower limb artery, renal artery, etc.; 3, rheumatic heart disease can be complicated by infective endocarditis, acute pulmonary edema, arrhythmia, etc.