In general, there is no clear requirement for the maximum number of cardiac stents that can be placed, so it is possible to place four to five stents when the condition of the organism permits. In clinical practice, the placement of an arterial stent is a commonly used minimally invasive interventional procedure for the treatment of coronary heart disease. The placement of an arterial stent can be a good solution to the lack of blood supply to the heart muscle caused by arterial stenosis. Prior to stent placement, the doctor will conduct a comprehensive assessment of the patient based on the location and degree of arterial stenosis to determine whether the patient is suitable for stent placement, as well as the number and location of stents to be placed. For patients with multiple stenoses, the number of arterial stents to be placed at one time may be higher, and varies from person to person. For those who want to have arterial stents placed, they need to go to a regular hospital to be evaluated by a professional doctor to choose a stent placement plan and follow the doctor’s instructions to prevent complications such as in-stent thrombosis.