There is no role for aspirin in patients with carotid plaque because aspirin does not reduce the carotid plaque that has formed. The use of aspirin for people with carotid plaque is actually a kind of mending of the fold, but it is better than not doing it at all. Because platelets have a characteristic that when they encounter roughness and unevenness, they like to gather together, just like the common saying that they like to surround, and when platelets gather together, they tend to stimulate the clotting system, thus forming a blood clot. After the formation of thrombus will narrow the blood vessels, so platelet aggregation is very easy to cause the blockage of blood vessels, the blockage of blood vessels will easily form embolism. If the embolism ruptures, it may cause serious vascular events, so the use of aspirin is actually to reduce the occurrence of cardiovascular events.