With the deeper study of coronary heart disease

the intimate association between coronary slow flow phenomenon and the occurrence and prognosis of cardiovascular events causes widespread concern. Platelet mainly involves in the body ’s blood clotting process and plays an important role in the thrombus formation and plaque rupture. Recent studies have found that platelet participates in the development process of the coronary slow flow phenomenon. The changes of activity of platelet are closely related to the pathophysiology of slow flow phenomenon. In this review the research progress of the relationship between the platelet activity and slow flow phenomenon was summarized.