At present, there are bare metal stents and drug-coated stents, and there are domestic and imported stents according to their origin. These stents are permanent in the body, except for the drug-coated stents, whose coating can degrade after a certain period of time in the body and still leave the metal stent platform in the body. Bare metal stents have been replaced by drug-coated stents in recent years because the restenosis rate is as high as 20-30%, and the application of the latter has further reduced the restenosis rate significantly. As for the choice of imported or domestic stents, it depends on a variety of factors, including the patient’s clinical condition, lesion condition, operator’s experience, the patient’s family’s financial situation, and the availability of hospital stock, etc. The decision is generally made by the physician’s comprehensive consideration. As for the effectiveness and safety, there is no data to support the superiority or inferiority. Chongjian Li, Department of Cardiovascular Medicine, Fu Wai Hospital, Beijing, China