The cause of coronary artery disease is coronary atherosclerosis, but the cause of atherosclerosis is not clear and may be the result of a combination of factors. It is currently believed that the occurrence of this disease is associated with hypertension, hyperlipidemia, high body weight, hyperglycemia, obesity, high age, and smoking,. Triggers include physical overwork, emotional stress, overeating, surgery, bleeding, cold stimulation, and constipation all predispose coronary patients to acute heart attack. Because the coronary artery is to deliver nutrition to the beating heart, the above mentioned causes can directly or indirectly make the coronary artery spasm, so that the coronary artery which is already hardened and narrowed is completely occluded, or the thrombus formed by the atheromatous plaque blocks the coronary artery, causing the myocardium to be ischemic and hypoxic for a long time, resulting in myocardial local necrosis and heart attack.