Premature ventricular beats are one of the most common clinical arrhythmias. Studies have found by 24hHolter ambulatory ECG that the detection rate of ventricular premature beats in the normal population is about 50%, while about 40% of those with clinically detected ventricular premature beats are not found to have organic heart disease. Therefore, if you are found to have ventricular premature episodes, please do not worry too much. We need to identify patients who may be at some potential risk for the necessary treatment based on the number, form and type of premature beats. If you have occasional ventricular premature episodes and the risk is not high, excessive medical treatment is not necessary and follow-up is sufficient. So, what types of ventricular prematureness require necessary treatment? Recent studies have shown that some patients with frequent ventricular premature events can develop arrhythmogenic cardiomyopathy and even heart failure. The risk factors include: high load (≥20%) and absolute number (≥20,000/day) of ventricular premature on 24hHolter test, combination of short burst ventricular tachycardia (i.e., three or more consecutive ventricular premature), wide QRS wave time (>140ms), variable QRS wave pattern (>1), short interval (<600ms), and non-branching ventricular premature. These types of ventricular premature are prone to impaired left ventricular function. After catheter radiofrequency ablation for ventricular premature, it can prevent the deterioration of cardiac function. If patients who have already developed cardiac insufficiency with decreased LVEF, after treating ventricular premature by radiofrequency ablation, cardiac insufficiency can be significantly improved and patients can benefit significantly.