There is no strict fixed time for the two stenting procedures, which should be based on the severity of the patient’s own condition. First of all, during coronary angiography, the severity of coronary artery stenosis is assessed, and coronary artery stenosis greater than 75% is performed, which requires the placement of stenting to open up the local blood vessels. For patients with acute myocardial infarction, when coronary angiography is performed, multiple vessels are found to be blocked, at this time, only the vessels with myocardial infarction will be treated, and if there are other vessels that require stenting, it is recommended that the patient follow the doctor’s instructions after the review, and then deal with the vessels with a more severe degree of stenosis. For patients with coronary atherosclerosis angina, when multiple coronary artery stenosis is detected during angiography, stenting is required, and generally after the first stenting, the second stenting is done according to the degree of recovery of the patient. It is recommended to consult a cardiologist in a regular hospital for the time between stenting.