Severe rheumatic fever can lead to a severe decrease in quality of life and may even lead to death. The prognosis of rheumatic fever depends mainly on the presence and severity of cardiac inflammation. If repeated episodes of rheumatic fever cause heart valve stenosis or incomplete closure and severe heart failure, so the patient’s quality of life can be seriously affected and treatment such as valve replacement can be performed. In addition, if the results are poor and it is difficult to heal for a long time, it can lead to death. Rheumatic fever is a disease closely related to streptococcal infection. The heart inflammation is usually insidious, and some patients will have a legacy of chronic heart valve disease. Joint inflammation usually starts acutely, and after effective treatment joint function is mostly fully restored without sequelae.