The arrhythmia type of coronary artery disease is usually due to myocardial ischemia and scar tissue after myocardial infarction, especially when the pacing conduction system is involved, which results in various arrhythmias, such as tachycardia, bradycardia and arrhythmia. The arrhythmia type of coronary heart disease is due to the spasm and ischemia of coronary arteries after the development of coronary heart disease and the combined conduction impulses, when a series of clinical symptoms and manifestations such as chest tightness, shortness of breath, palpitations and precordial discomfort are relatively dangerous. If ventricular fibrillation and ventricular tachycardia occur, they must be treated immediately with drugs or electric defibrillation and electric cardioversion.