Mild coronary artery stenosis requires aspirin, in order to prevent heart attacks. Mild coronary artery stenosis can be diagnosed as coronary atherosclerosis, which is characterized by intimal damage, lipid accumulation, fibrous tissue proliferation easily secondary to local thrombosis. Aspirin is an antiplatelet aggregation drug that inhibits the formation of arterial thrombi. Aspirin can inhibit platelet cyclooxygenase, affecting platelet aggregation and anti-thrombosis to achieve anticoagulant effect. Aspirin is contraindicated in the presence of bleeding symptoms or other active bleeding disorders. It is contraindicated in patients who are allergic to the product. Avoid use in pregnant and lactating women. The most common adverse reactions to aspirin are gastrointestinal symptoms such as nausea and vomiting, which mostly disappear after stopping the drug. Be careful not to drink alcohol while taking aspirin. Patients suffering from mild coronary artery stenosis can take antiplatelet drugs such as aspirin and lipid-lowering drugs such as resuvastatin calcium capsules under the guidance of the doctor, should go to the hospital in a timely manner, do not use their own medication, in order to avoid delays in the condition or adverse reactions.