Coronary artery stenosis can be treated by general therapy, drug therapy, intervention and surgery. 1. General treatment: Eat a reasonable diet, avoid excessive intake of high salt, high sugar and high fat food, participate in physical activities, avoid staying up late and keep a happy mood. 2. Drug therapy: use aspirin, clopidogrel and other anti-platelet drugs to prevent thrombosis, prevent further narrowing of coronary artery stenosis and prevent thromboembolism. Patients with dyslipidemia can also use atorvastatin, ezetimibe and other lipid-adjusting drugs. Specific medications should be prescribed by the doctor. 3. Interventional and surgical treatment: Including percutaneous balloon dilatation, stent implantation and other interventional treatments, but also feasible blood flow reconstruction or bypass grafting surgery. Patients with coronary artery stenosis should go to the hospital in a timely manner, under the guidance and advice of the doctor to carry out regular treatment to avoid further development of the condition.