Before the cardiac stenting procedure, blood tests such as coagulation, routine blood, biochemistry, blood type, ECG and cardiac ultrasound are performed to assess the patient’s status and tolerance to the procedure. The cardiac stenting operation is performed by puncturing the radial artery or femoral artery, inserting a sheath and feeding a guidewire through the sheath, feeding a catheter along the guidewire, delivering the catheter to the root of the aorta and the coronary artery, and then pushing a contrast agent to selectively show the coronary artery course and clarify the lesion site and degree of stenosis. If the coronary angiogram shows vessels, such as the left main trunk, anterior descending branch, gyrus branch, and right coronary artery, in important locations, such as severe stenosis in the proximal middle segment, or stenosis >70%, along with evidence of ischemia, intervention is considered. To implant a stent, a guiding catheter is sent along the puncture sheath to the opening of the coronary artery, a guidewire is sent along the guiding catheter to the distal end of the lesion, a balloon is sent along the guidewire, the stent is dilated at the stenosis site, and after satisfactory dilatation, the stent is implanted, and after implantation of the stent, another angiogram is performed to clarify the patency of coronary blood flow.