Severe heart disease, described here primarily as acute myocardial infarction. Acute myocardial infarction, the most serious form of coronary heart disease, is a direct necrosis of heart muscle cells, a condition that can be life-threatening at any time. Patients with sudden onset of chest tightness and chest pain that persists without relief and is accompanied by profuse sweating need not hesitate to call 120 immediately and transfer to the chest pain center unit of the cardiology department and resuscitation room of a nearby qualified tertiary care hospital or higher via an emergency transport vehicle. Take a pack of oral infarction medication under the doctor’s guidance, and consult with a consulting cardiologist to determine whether there is an indication for emergency coronary angiography and stent implantation surgery. If the doctor recommends emergency surgery to open a blood vessel, the patient and family must not hesitate or repeatedly ask relatives in the family or other non-medical professionals, otherwise the best time for surgery will be easily missed. After surgery, the patient should be received in the intensive care unit of the cardiology department and treated with dual antiplatelet therapy, anticoagulation therapy, coronary dilation, lipid regulation and plaque stabilization, and improvement of circulation. After the patient is successfully discharged from the hospital, he should be followed up regularly at the hospital. One and a half to two years after the stent is placed, he should return to the hospital to be hospitalized for another coronary angiography procedure to determine whether there is any new stenosis in the original stent and whether the vessels that were not originally stented have progressed to a condition that requires stent placement.