Aspirin is a commonly used clinical antiplatelet agent, and studies have shown that aspirin can effectively prevent the formation of arterial thrombosis and significantly reduce the incidence of cardiovascular events such as heart attacks and cerebral infarcts. Indications include reducing the risk of morbidity in patients with suspected acute myocardial infarction, preventing recurrence of myocardial infarction, secondary prevention of stroke, reducing the risk of morbidity in patients with stable and unstable angina pectoris, and preventing deep vein thrombosis and pulmonary embolism after major surgery. Aspirin enteric-coated tablets common adverse reactions are nausea, vomiting, epigastric discomfort or pain and other gastrointestinal reactions, the incidence of about 3%-9%, after discontinuation of the drug can mostly disappear, long-term or large doses of oral administration can occur gastrointestinal bleeding or ulcers. This product is contraindicated in people who are allergic to aspirin or other salicylates, or any other component of the drug, acute gastrointestinal ulcers, bleeding disorders, severe renal failure, severe hepatic failure, severe cardiac failure, and the last trimester of pregnancy. Acute gastric bleeding is an absolute contraindication to aspirin. When taking aspirin enteric-coated tablets must be under the guidance of a physician, do not take the drug on your own, the emergence of adverse reactions need to consult a doctor in a timely manner.