Premature ventricular contractions are one of the common cardiac arrhythmias. It can be seen in normal people and patients with heart disease. The principles of treatment are: 1. no organic heart disease, and no palpitations and other symptoms do not need drug treatment; 2. no organic heart disease, but there are symptoms can take drug treatment; 3. organic heart disease, whether there are symptoms or not need drug treatment. (Organic heart disease is common: coronary heart disease, hypertensive heart disease, cardiomyopathy, wind heart disease, etc.)