In general, the condition of coronary heart disease put four stents is more serious. The main purpose of stent implantation in patients with coronary artery disease is to resolve severe stenosis and restore normal blood supply to the heart muscle. Patients with a coronary artery stenosis of at least 75% or a lesion that is clearly identified as causing myocardial ischemia by functional tests require stenting. The length of the lesion also determines the number of stents to be implanted. The stent needs to completely cover the lesion, and for a vessel with a very long stenosis, two or three stents may need to be implanted in order to ensure restoration of lumen patency. Therefore, the use of four stents indicates that the condition has become more serious. In addition, it is recommended that patients with coronary artery disease with four stents follow the doctor’s instructions and actively cooperate with the treatment to avoid delaying the condition.