The key points of care for coronary artery stent implantation are as follows: 1. Pay attention to the operated limb, do not exert force and avoid lifting heavy objects within half a month, because it takes time for the punctured artery to heal and the artery pressure is particularly high, which may rupture again when exerting force, leading to hematoma caused by blood leakage later. The hematoma may be mild or heavy, and the heavy one may affect the function of the hand; 2, correct the lifestyle, the causes of long plaque in blood vessels, most commonly in hypertension, high blood pressure, high blood sugar, smoking, etc., to adjust the blood pressure, blood sugar, blood lipids to the normal range, but also strict cessation of smoking, the patient and family members need to work together, lifestyle intervention is the focus.