If angina develops after cardiac stenting, the first step is to give intensive drug therapy and adjust the medication regimen. Patients are advised to take aspirin, atorvastatin and other drugs in combination with nitrates and beta-blockers. For patients who still have episodes of discomfort with the application of the above four types of drugs, they can also be combined with Vanzantine, and if necessary, they can also be hospitalized for systematic examination and treatment. After hospitalization, circulatory improvement and anticoagulant drugs, such as subcutaneous injection of low molecular heparin, can be used. In addition to medication, patients should also pay attention to quit smoking and alcohol, avoid straining and staying up late, and give a low salt and low fat diet. Lifestyle interventions are necessary to achieve better results. If patients still have angina attacks after the above medications, they can review coronary CT or coronary angiography if necessary. Because of this condition, it is possible that the coronary vessels have become severely stenosed again and coronary stenting is required if necessary.