The formula of warming Yang and invigorating Blood to prevent and treat restenosis after coronary intervention has the effect of improving angina symptoms, blood stasis evidence, Chinese medicine chest paralysis symptoms, and also has a preventive effect on cardiovascular events. Restenosis (RS) after coronary intervention refers to restenosis that occurs within 6 months after PCI at the dilated site. As a treatment, PCI can provide immediate relief of chest pain, chest tightness and other symptoms, but it cannot fundamentally change coronary atherosclerosis or eradicate coronary heart disease. Some of the “blood that has been moved cannot be returned to its original path” and remains in the heart and veins, which can also become stagnant blood. The addition of the formula for warming Yang and invigorating Blood to conventional Western medicine is more effective than conventional Western medicine alone in relieving angina pectoris symptoms, blood stasis and chest paralysis, and in preventing cardiovascular events.