Aspirin is a commonly used drug in clinical practice, and its effects are mainly in the following areas. First, the role of anti-platelet aggregation and prevention of thrombosis, as a commonly used anti-platelet drugs, can inhibit the aggregation of platelets and the release reaction. It is often used in the prevention and treatment of coronary heart disease, angina pectoris and acute myocardial infarction, so as to prevent thrombosis. Second, the role of antipyretic and analgesic, aspirin can dilate cerebral blood vessels, effectively relieve headaches. When you take aspirin when you have a fever, it can act on the thermoregulatory center of the brain, so that the body temperature returns to normal and play a role in reducing fever. Third, the role of anti-inflammatory, aspirin’s anti-inflammatory effect is often used in the prevention and treatment of rheumatic diseases, such as rheumatoid arthritis after taking aspirin can reduce inflammation, pain and other symptoms of rheumatoid arthritis to achieve the purpose of anti-inflammatory.