The cost of domestic stent is about RMB 8,000, and stent implantation is a treatment for coronary artery stenosis. When coronary angiogram indicates that the stenosis of coronary artery is more than 75% and accompanied by obvious angina symptoms, it is recommended to put in a stent. The cost of stenting, together with the cost of coronary angiography and the cost of various auxiliary supplies such as guidewires, catheters and balloons used during the procedure, adds up to about RMB 40,000 for just one stent, and for each additional stent over two, only the cost of the stent will be increased, such as the cost of two stents is about RMB 48,000. After coronary artery stenting, you need to take long-term oral medications for secondary prevention of coronary heart disease, such as clopidogrel and tigretol for at least 1 year.