Abdominal aortic riding span embolism is more likely to occur in patients with atrial fibrillation caused by rheumatic heart disease and coronary heart disease. The best treatment time is often delayed because patients ignore the initial symptoms such as numbness, coldness and pain in both lower extremities, or because they do not know about the disease and think it is the initial manifestation of cerebral infarction and consult neurology. Patients suffering from atrial fibrillation or rheumatic heart disease should take long-term anticoagulants to prevent thrombosis if necessary. Once the symptoms of numbness, coldness and pain in the extremities are detected, vascular surgery should be consulted immediately to avoid delaying the condition. Treatment options double femoral artery dissection and thrombectomy.