Drug balloon life is over to adhere to the medication, control risk factors, reduce the risk of stenosis, such as again stenosis blockage, give coronary angiography and intervention. The surface of the drug balloon is covered with drugs, in the process of contact with the arterial vasculature, it can be quickly released into the vessel wall, the drug balloon surface of the drug can inhibit the proliferation of vascular epidermal cells, to avoid epidermal cell proliferation resulting in coronary artery stenosis. After the drug is released into the blood vessel wall, there is no clear time of action, and it can work for a long time. If the drug balloon failure, to adhere to oral antiplatelet drug aspirin, lipid-lowering drugs such as atorvastatin, control a variety of risk factors, quit smoking and alcohol, to avoid the treatment of blood vessel stenosis again, if chest pain and other symptoms need to be again for coronary arteriography as well as interventional therapy. Drug capsule is a special treatment, to choose the appropriate indications, under the guidance of a professional doctor for treatment.