Aspirin’s role in preventing thrombosis has been agreed upon by the medical community and patients as the cornerstone of antiplatelet therapy, and as long as there are no contraindications, ischemic cardiovascular disease can be prevented by long-term oral administration of 75-100 mg of low-dose aspirin. Small-dose aspirin only so have such a role, because aspirin irreversible inhibition of platelet cyclo-oxygenase, platelet cyclo-oxygenase, once inhibited, will lead to platelets in its 7-14 days throughout the life cycle, platelets, whether aggregation or release and other functions are fully inhibited, to a large extent, cut off the mechanism of thrombosis and prevention of thrombosis, it will play a role in anticoagulation, a widely It is widely used in the primary and secondary prevention of coronary heart disease.