Valvular atrial fibrillation is defined as atrial fibrillation caused by heart valve disease, which mainly includes mitral stenosis, mitral valve closure insufficiency, and aortic stenosis. Mitral stenosis is the earliest to appear in atrial fibrillation, which is induced by the frequency of premature atrial contractions, which are most likely to be followed by dyspnea and even pulmonary edema, and should be followed by rapid heart rate control as well as restoration of normal sinus rhythm. 3/4 of chronic severe mitral valve insufficiency can also appear in atrial fibrillation, and infected endocarditis can also appear. Atrial fibrillation can occur in 10% of patients with aortic stenosis, so valvular atrial fibrillation is the most common complication of heart valve disease.