Drugs can only control the symptoms and stabilize the plaque in the coronary arteries. Drugs are the basis, interventions have been developed in the last 20 years and have matured since 2000, not only to control symptoms, but also to have the possibility of complete cure and to hold up narrow vessels. Intervention is simple, non-invasive, no need to open the chest, and immediate results, but technically it is high-risk, requires certain training, certain conditions to do, and also requires the cooperation of the patient. Once the stent forms a blood clot, it will be a problem, with a 1% incidence. In general, nowadays, people pursue quality of life in addition to life. A 40-year-old man who goes out every day to run, play golf, climb mountains, and take medicine every day does not die but feels that there is no point in living, should do intervention. Can not do intervention or poor economic conditions, intervention to do seven or eight stents to solve, then simply give up, consider bypass. In fact, intervention and bypass surgery is one thing, intervention is to open up the blockage inside to unblock, bypass is to open the chest from the upstream to get a tube to the downstream, re-opening a channel. Theoretically speaking, drugs, interventions and surgeries have the same effect on low-risk stable patients, whether interventions or bypasses or drugs, no one will die. However, the surgical damage to the patient in the middle of the interventional process is much less than that of surgery, and the recovery time is much shorter. A hundred 40-year-old people who take medication, or intervention, or bypass eventually die the same number of people. Interventional treatment people can climb the mountain, but people who take drugs absolutely can not climb the mountain, bypass can also climb. But bypass people have less recurrence, intervention people have more recurrence, bypass people have a small chance of restenosis, now there is a drug stent, can prevent recurrence, drug stent and bypass recurrence rate is estimated to be about the same.