In 1977, the world’s first percutaneous intervention for coronary artery disease (PCI) was successfully performed, and this new technology without opening the chest ended the history that only cardiac surgery could reconstruct coronary vessels. After more than 30 years of development, interventional therapy has been widely accepted clinically because of its high safety, low injury, fast recovery and remarkable efficacy. The number of PCI procedures in China in 2010 was nearly 300,000, and it has become the two main treatment modalities for coronary heart disease, alongside with cardiac surgery. Coronary intervention is a minimally invasive procedure in which the doctor first punctures the radial or femoral artery, then sends a special catheter from the puncture site to the root of the aorta via the radial or femoral artery, finds the opening of the coronary artery, sends a special guide wire into the coronary artery to the distal end of the stenosis, implants a stent, unblocks the vessel, restores normal blood supply to the myocardium, and achieves “immediate” treatment. immediate” treatment effect. Therefore, it is especially important to choose a professional cardiology hospital and a skilled interventional surgeon.