Premature ventricular contractions are one of the more common types of arrhythmias and can occur in normal people and in patients with various heart conditions. This means that healthy people can also have premature ventricular contractions, so it is important not to be overly nervous about finding premature ventricular contractions during physical examinations or other tests. Occasional low-risk premature ventricular contractions are usually not a cause for concern, but should only be noticed when they are more frequent. Occasional premature ventricular contractions are benign ventricular premature contractions, mostly caused by emotional excitement, poor rest, overexertion, smoking, alcohol and coffee, etc., without organic heart lesions. This kind of premature ventricular contraction usually disappears after the above mentioned causes are removed, and it has no adverse effects on the body. Does it mean that ventricular premature contractions do not need to be treated? Previously, it was thought that the presence of premature ventricular contractions in patients with organic heart disease was a predictor of poor prognosis. For example, premature ventricular contractions caused by cardiomyopathy and coronary artery disease. Premature ventricular contractions by themselves do not cause death. It is mostly harmful because premature ventricular contractions cause ventricular tachycardia leading to increased mortality in patients. Therefore, patients with organic heart disease such as hypertrophy and coronary artery disease need to pay careful attention when ventricular premature contractions occur, as frequent ventricular premature contractions have the potential to develop into serious arrhythmias or lead to angina pectoris or heart failure. Such prognostic ventricular premature contractions require medication under medical supervision and treatment of the precipitating cause. In contrast, the previous view was that frequent ventricular premature contractions in normal hearts were benign and did not need to be treated. Because of this, clinicians tend to pay more attention to frequent premature ventricular contractions in organic heart disease and relatively less attention to frequent premature ventricular contractions occurring in the healthy population. In recent years, an increasing number of studies have found that this is not the case, and that frequent ventricular prematureities in the normal heart are not entirely benign and require active intervention. This is because prolonged frequent ventricular prematureness may cause tachycardia cardiomyopathy, leading to abnormalities in the structure and function of the heart, commonly in the form of enlarged hearts and reduced ejection fraction. How much ventricular prematureness needs to be treated? Generally speaking, it is now accepted that patients with more than 10,000 ventricular premature events on a 24-hour ambulatory ECG require treatment. The treatment options are drug therapy and radiofrequency ablation. If medication is not effective or if the patient cannot take the medication for a long time for other reasons, radiofrequency ablation may be an option. Radiofrequency ablation has good efficacy and safety for specific areas of ventricular prematureness. Generally speaking, the efficiency of radiofrequency ablation for ventricular premature treatment is more than 80%, and the safety is very good and the postoperative recovery is fast. So how does radiofrequency ablation treat ventricular premature? Most ventricular premature is the abnormal excitation point in the heart, and these abnormal excitation point is located in the ventricle, radiofrequency ablation is through radiofrequency energy to make local small pieces of myocardium coagulation necrosis, and then make the abnormal excitation point can no longer issue impulses. Nowadays, the success rate of radiofrequency ablation of premature ventricle has been significantly improved under the guidance of three-dimensional marker measurement.