Aspirin is a common drug for cardiovascular patients, mainly acting on platelets and having an anti-platelet aggregation effect. Aspirin is generally used in patients with coronary artery disease, myocardial infarction or after stent surgery for coronary artery disease, as well as in patients with hypertension and diabetes who are prone to cardiovascular events. In addition, we often encounter some young patients with high platelet levels in routine blood tests, which are higher than normal and require aspirin to prevent blockage of blood vessels caused by excessive platelets. It is also important to note that most patients with hypertension have coronary artery and diabetic problems, so they must be told not to use aspirin if their blood pressure is too high. This is because high blood pressure can easily lead to bleeding, such as brain hemorrhage, and the simultaneous application of aspirin can cause massive bleeding and affect the patient’s life.