If angina attacks frequently, the consequences can be quite serious and can easily lead to myocardial infarction and endanger the life of the patient, so once frequent attacks of angina occur, you need to go to the hospital immediately for examination and treatment. These examinations include electrocardiogram, cardiac ultrasound, coronary CTA, coronary angiography and myocardial imaging, which can clarify the extent of persistent angina and whether myocardial infarction has occurred. In addition, the stenosis of the coronary artery lumen can be used to assess the next treatment options, such as conservative treatment with medication, coronary stenting, or even surgical bypass, which can relieve angina and prevent myocardial infarction.