The TOAST staging of ischemic stroke is a comprehensive staging by the Harvard Stroke Center and the National Center for Neurological Disorders. The first one is the atherosclerotic type, which has significant stenosis of the large intracranial and extracranial arteries or cortical branches due to atherosclerosis. Third, small artery occlusion, which is often a small infarct and is usually treated conservatively with drugs; fourth, there are other clear causes of stroke, such as coagulation disorders and changes in blood composition. Therefore, ischemic stroke TOAST typing is mainly divided into these five types. The above content is for reference only. Please refer to the doctor’s instructions for specific medication and treatment.