Mitral stenosis in patients can lead to embolism due to the tendency of mitral stenosis to cause enlargement of the left atrium. The enlargement of the left atrium is a key anatomical factor leading to atrial fibrillation and cardiac arrhythmias. When atrial fibrillation occurs, it is easy for blood clots to form in the left atrium, especially in the area of the left atrial appendage. When a blood clot breaks off, it can travel with the bloodstream and cause occlusion of the corresponding blood vessels, resulting in embolic complications. Timely surgical intervention to treat mitral stenosis can effectively prevent complications such as atrial enlargement and blood clots caused by mitral stenosis.